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langchain - 💡(How to fix) Fix `cannot unmarshal array into Go value of type api.ToolCallFunctionArguments (status code: -1)` [3 comments, 3 participants]

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langchain-ai/langchain#36550•Fetched 2026-04-08 02:51:59
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Author
khtehkhteh
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khtehkhtehmdrxymdrxySyedShahmeerAli12SyedShahmeerAli12
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labeled ×5cross-referenced ×4commented ×3closed ×2

Another langchain-ollama stability issue?

Error Message

Traceback (most recent call last): File "/usr/src/Python/rag-agent/src/rag_agent/RAGAgent.py", line 250, in ChatAgent async for stream_mode, data in self._agent.astream( # The output of each step in the graph. The output shape depends on the stream_mode. ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ...<16 lines>... await output_queue.put(update) # Queue the state object. Not the message: update["messages"][-1] ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "/usr/src/Python/rag-agent/.venv/lib/python3.13/site-packages/langgraph/pregel/main.py", line 3128, in astream async for _ in runner.atick( ...<16 lines>... yield o File "/usr/src/Python/rag-agent/.venv/lib/python3.13/site-packages/langgraph/pregel/_runner.py", line 304, in atick await arun_with_retry( ...<15 lines>... ) File "/usr/src/Python/rag-agent/.venv/lib/python3.13/site-packages/langgraph/pregel/_retry.py", line 242, in arun_with_retry return await task.proc.ainvoke(task.input, config) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "/usr/src/Python/rag-agent/.venv/lib/python3.13/site-packages/langgraph/_internal/_runnable.py", line 705, in ainvoke input = await asyncio.create_task( ^^^^^^^^^^^^^^^^^^^^^^^^^^ step.ainvoke(input, config, **kwargs), context=context ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ) ^ File "/usr/lib/python3.13/asyncio/futures.py", line 286, in await yield self # This tells Task to wait for completion. ^^^^^^^^^^ File "/usr/lib/python3.13/asyncio/tasks.py", line 375, in __wakeup future.result() ~~~~~~~~~~~~~^^ File "/usr/lib/python3.13/asyncio/futures.py", line 199, in result raise self._exception.with_traceback(self._exception_tb) File "/usr/lib/python3.13/asyncio/tasks.py", line 304, in __step_run_and_handle_result result = coro.send(None) File "/usr/src/Python/rag-agent/.venv/lib/python3.13/site-packages/langgraph/_internal/_runnable.py", line 473, in ainvoke ret = await self.afunc(*args, **kwargs) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "/usr/src/Python/rag-agent/.venv/lib/python3.13/site-packages/langchain/agents/factory.py", line 1361, in amodel_node result = await awrap_model_call_handler(request, _execute_model_async) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "/usr/src/Python/rag-agent/.venv/lib/python3.13/site-packages/langchain/agents/factory.py", line 386, in composed outer_result = await outer(request, inner_handler) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "/usr/lib/python3.13/asyncio/futures.py", line 286, in await yield self # This tells Task to wait for completion. ^^^^^^^^^^ File "/usr/lib/python3.13/asyncio/tasks.py", line 375, in __wakeup future.result() ~~~~~~~~~~~~~^^ File "/usr/lib/python3.13/asyncio/futures.py", line 199, in result raise self._exception.with_traceback(self._exception_tb) File "/usr/lib/python3.13/asyncio/tasks.py", line 304, in __step_run_and_handle_result result = coro.send(None) File "/usr/src/Python/rag-agent/.venv/lib/python3.13/site-packages/langchain/agents/middleware/todo.py", line 271, in awrap_model_call return await handler(request.override(system_message=new_system_message)) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "/usr/src/Python/rag-agent/.venv/lib/python3.13/site-packages/langchain/agents/factory.py", line 376, in inner_handler inner_result = await inner(req, handler) ^^^^^^^^^^^^^^^^^^^^^^^^^ File "/usr/src/Python/rag-agent/.venv/lib/python3.13/site-packages/langchain/agents/factory.py", line 386, in composed outer_result = await outer(request, inner_handler) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "/usr/lib/python3.13/asyncio/futures.py", line 286, in await yield self # This tells Task to wait for completion. ^^^^^^^^^^ File "/usr/lib/python3.13/asyncio/tasks.py", line 375, in __wakeup future.result() ~~~~~~~~~~~~~^^ File "/usr/lib/python3.13/asyncio/futures.py", line 199, in result raise self._exception.with_traceback(self._exception_tb) File "/usr/lib/python3.13/asyncio/tasks.py", line 304, in __step_run_and_handle_result result = coro.send(None) File "/usr/src/Python/rag-agent/.venv/lib/python3.13/site-packages/deepagents/middleware/filesystem.py", line 1126, in awrap_model_call return await handler(request) ^^^^^^^^^^^^^^^^^^^^^^ File "/usr/src/Python/rag-agent/.venv/lib/python3.13/site-packages/langchain/agents/factory.py", line 376, in inner_handler inner_result = await inner(req, handler) ^^^^^^^^^^^^^^^^^^^^^^^^^ File "/usr/src/Python/rag-agent/.venv/lib/python3.13/site-packages/langchain/agents/factory.py", line 386, in composed outer_result = await outer(request, inner_handler) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "/usr/lib/python3.13/asyncio/futures.py", line 286, in await yield self # This tells Task to wait for completion. ^^^^^^^^^^ File "/usr/lib/python3.13/asyncio/tasks.py", line 375, in __wakeup future.result() ~~~~~~~~~~~~~^^ File "/usr/lib/python3.13/asyncio/futures.py", line 199, in result raise self._exception.with_traceback(self._exception_tb) File "/usr/lib/python3.13/asyncio/tasks.py", line 304, in __step_run_and_handle_result result = coro.send(None) File "/usr/src/Python/rag-agent/.venv/lib/python3.13/site-packages/deepagents/middleware/subagents.py", line 691, in awrap_model_call return await handler(request.override(system_message=new_system_message)) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "/usr/src/Python/rag-agent/.venv/lib/python3.13/site-packages/langchain/agents/factory.py", line 376, in inner_handler inner_result = await inner(req, handler) ^^^^^^^^^^^^^^^^^^^^^^^^^ File "/usr/src/Python/rag-agent/.venv/lib/python3.13/site-packages/langchain/agents/factory.py", line 386, in composed outer_result = await outer(request, inner_handler) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "/usr/lib/python3.13/asyncio/futures.py", line 286, in await yield self # This tells Task to wait for completion. ^^^^^^^^^^ File "/usr/lib/python3.13/asyncio/tasks.py", line 375, in __wakeup future.result() ~~~~~~~~~~~~~^^ File "/usr/lib/python3.13/asyncio/futures.py", line 199, in result raise self._exception.with_traceback(self._exception_tb) File "/usr/lib/python3.13/asyncio/tasks.py", line 304, in __step_run_and_handle_result result = coro.send(None) File "/usr/src/Python/rag-agent/.venv/lib/python3.13/site-packages/deepagents/middleware/summarization.py", line 1024, in awrap_model_call return await handler(request.override(messages=truncated_messages)) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "/usr/src/Python/rag-agent/.venv/lib/python3.13/site-packages/langchain/agents/factory.py", line 376, in inner_handler inner_result = await inner(req, handler) ^^^^^^^^^^^^^^^^^^^^^^^^^ File "/usr/lib/python3.13/asyncio/futures.py", line 286, in await yield self # This tells Task to wait for completion. ^^^^^^^^^^ File "/usr/lib/python3.13/asyncio/tasks.py", line 375, in __wakeup future.result() ~~~~~~~~~~~~~^^ File "/usr/lib/python3.13/asyncio/futures.py", line 199, in result raise self._exception.with_traceback(self._exception_tb) File "/usr/lib/python3.13/asyncio/tasks.py", line 304, in __step_run_and_handle_result result = coro.send(None) File "/usr/src/Python/rag-agent/.venv/lib/python3.13/site-packages/langchain_anthropic/middleware/prompt_caching.py", line 180, in awrap_model_call return await handler(request) ^^^^^^^^^^^^^^^^^^^^^^ File "/usr/src/Python/rag-agent/.venv/lib/python3.13/site-packages/langchain/agents/factory.py", line 1330, in execute_model_async output = await model.ainvoke(messages) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "/usr/src/Python/rag-agent/.venv/lib/python3.13/site-packages/langchain_core/runnables/base.py", line 5708, in ainvoke return await self.bound.ainvoke( ^^^^^^^^^^^^^^^^^^^^^^^^^ ...<3 lines>... ) ^ File "/usr/src/Python/rag-agent/.venv/lib/python3.13/site-packages/langchain_core/language_models/chat_models.py", line 477, in ainvoke llm_result = await self.agenerate_prompt( ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ...<8 lines>... ) ^ File "/usr/src/Python/rag-agent/.venv/lib/python3.13/site-packages/langchain_core/language_models/chat_models.py", line 1196, in agenerate_prompt return await self.agenerate( ^^^^^^^^^^^^^^^^^^^^^ prompt_messages, stop=stop, callbacks=callbacks, **kwargs ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ) ^ File "/usr/src/Python/rag-agent/.venv/lib/python3.13/site-packages/langchain_core/language_models/chat_models.py", line 1154, in agenerate raise exceptions[0] File "/usr/lib/python3.13/asyncio/tasks.py", line 304, in __step_run_and_handle_result result = coro.send(None) File "/usr/src/Python/rag-agent/.venv/lib/python3.13/site-packages/langchain_core/language_models/chat_models.py", line 1423, in _agenerate_with_cache result = await self._agenerate( ^^^^^^^^^^^^^^^^^^^^^^ messages, stop=stop, run_manager=run_manager, **kwargs ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ) ^ File "/usr/src/Python/rag-agent/.venv/lib/python3.13/site-packages/langchain_ollama/chat_models.py", line 1208, in _agenerate final_chunk = await self._achat_stream_with_aggregation( ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ messages, stop, run_manager, verbose=self.verbose, **kwargs ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ) ^ File "/usr/src/Python/rag-agent/.venv/lib/python3.13/site-packages/langchain_ollama/chat_models.py", line 991, in _achat_stream_with_aggregation async for chunk in self._aiterate_over_stream(messages, stop, **kwargs): ...<9 lines>... ) File "/usr/src/Python/rag-agent/.venv/lib/python3.13/site-packages/langchain_ollama/chat_models.py", line 1131, in _aiterate_over_stream async for stream_resp in self._acreate_chat_stream(messages, stop, **kwargs): ...<52 lines>... yield chunk File "/usr/src/Python/rag-agent/.venv/lib/python3.13/site-packages/langchain_ollama/chat_models.py", line 937, in _acreate_chat_stream async for part in await self._async_client.chat(**chat_params): yield part File "/usr/src/Python/rag-agent/.venv/lib/python3.13/site-packages/ollama/_client.py", line 762, in inner raise ResponseError(err) ollama._types.ResponseError: error parsing tool call: raw='[ { "task": "Research and provide comprehensive explanation of task decomposition, including definition, purpose, typical methods, and citations.", "status": "pending" } ]', err=json: cannot unmarshal array into Go value of type api.ToolCallFunctionArguments (status code: -1)

Root Cause

Another langchain-ollama stability issue?

Fix Action

Fix / Workaround

  • This is a bug, not a usage question.
  • I added a clear and descriptive title that summarizes this issue.
  • I used the GitHub search to find a similar question and didn't find it.
  • I am sure that this is a bug in LangChain rather than my code.
  • The bug is not resolved by updating to the latest stable version of LangChain (or the specific integration package).
  • This is not related to the langchain-community package.
  • I posted a self-contained, minimal, reproducible example. A maintainer can copy it and run it AS IS.

Other Dependencies

aiohttp: 3.13.5 anthropic: 0.89.0 asyncpg: 0.31.0 blockbuster: 1.5.26 click: 8.3.2 cloudpickle: 3.1.2 croniter: 6.2.2 cryptography: 46.0.6 dataclasses-json: 0.6.7 filetype: 1.2.0 google-genai: 1.70.0 grpcio: 1.80.0 grpcio-health-checking: 1.80.0 grpcio-tools: 1.75.1 httpx: 0.28.1 httpx-sse: 0.4.3 jsonpatch: 1.33 jsonschema-rs: 0.29.1 langgraph: 1.1.6 langgraph-checkpoint: 4.0.1 neo4j: 6.1.0 neo4j-graphrag: 1.14.1 numpy: 2.4.4 ollama: 0.6.1 openai: 2.30.0 opentelemetry-api: 1.40.0 opentelemetry-exporter-otlp-proto-http: 1.40.0 opentelemetry-sdk: 1.40.0 orjson: 3.11.8 packaging: 26.0 pgvector: 0.3.6 protobuf: 6.33.6 psycopg: 3.3.3 psycopg-pool: 3.3.0 pydantic: 2.12.5 pydantic-settings: 2.13.1 pyjwt: 2.12.1 pytest: 9.0.2 python-dotenv: 1.2.2 pyyaml: 6.0.3 PyYAML: 6.0.3 requests: 2.33.1 requests-toolbelt: 1.0.0 SQLAlchemy: 2.0.49 sqlalchemy: 2.0.49 sse-starlette: 2.1.3 starlette: 1.0.0 structlog: 25.5.0 tenacity: 9.1.4 tiktoken: 0.12.0 truststore: 0.10.4 typing-extensions: 4.15.0 uuid-utils: 0.14.1 uvicorn: 0.43.0 watchfiles: 1.1.1 wcmatch: 10.1 websockets: 16.0 xxhash: 3.6.0 zstandard: 0.25.0

Code Example

Traceback (most recent call last):
  File "/usr/src/Python/rag-agent/src/rag_agent/RAGAgent.py", line 250, in ChatAgent
    async for stream_mode, data in self._agent.astream( # The output of each step in the graph. The output shape depends on the stream_mode.
    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    ...<16 lines>...
                    await output_queue.put(update) # Queue the state object. Not the message: update["messages"][-1]
                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/Python/rag-agent/.venv/lib/python3.13/site-packages/langgraph/pregel/main.py", line 3128, in astream
    async for _ in runner.atick(
    ...<16 lines>...
            yield o
  File "/usr/src/Python/rag-agent/.venv/lib/python3.13/site-packages/langgraph/pregel/_runner.py", line 304, in atick
    await arun_with_retry(
    ...<15 lines>...
    )
  File "/usr/src/Python/rag-agent/.venv/lib/python3.13/site-packages/langgraph/pregel/_retry.py", line 242, in arun_with_retry
    return await task.proc.ainvoke(task.input, config)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/Python/rag-agent/.venv/lib/python3.13/site-packages/langgraph/_internal/_runnable.py", line 705, in ainvoke
    input = await asyncio.create_task(
            ^^^^^^^^^^^^^^^^^^^^^^^^^^
        step.ainvoke(input, config, **kwargs), context=context
        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    )
    ^
  File "/usr/lib/python3.13/asyncio/futures.py", line 286, in __await__
    yield self  # This tells Task to wait for completion.
    ^^^^^^^^^^
  File "/usr/lib/python3.13/asyncio/tasks.py", line 375, in __wakeup
    future.result()
    ~~~~~~~~~~~~~^^
  File "/usr/lib/python3.13/asyncio/futures.py", line 199, in result
    raise self._exception.with_traceback(self._exception_tb)
  File "/usr/lib/python3.13/asyncio/tasks.py", line 304, in __step_run_and_handle_result
    result = coro.send(None)
  File "/usr/src/Python/rag-agent/.venv/lib/python3.13/site-packages/langgraph/_internal/_runnable.py", line 473, in ainvoke
    ret = await self.afunc(*args, **kwargs)
          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/Python/rag-agent/.venv/lib/python3.13/site-packages/langchain/agents/factory.py", line 1361, in amodel_node
    result = await awrap_model_call_handler(request, _execute_model_async)
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/Python/rag-agent/.venv/lib/python3.13/site-packages/langchain/agents/factory.py", line 386, in composed
    outer_result = await outer(request, inner_handler)
                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3.13/asyncio/futures.py", line 286, in __await__
    yield self  # This tells Task to wait for completion.
    ^^^^^^^^^^
  File "/usr/lib/python3.13/asyncio/tasks.py", line 375, in __wakeup
    future.result()
    ~~~~~~~~~~~~~^^
  File "/usr/lib/python3.13/asyncio/futures.py", line 199, in result
    raise self._exception.with_traceback(self._exception_tb)
  File "/usr/lib/python3.13/asyncio/tasks.py", line 304, in __step_run_and_handle_result
    result = coro.send(None)
  File "/usr/src/Python/rag-agent/.venv/lib/python3.13/site-packages/langchain/agents/middleware/todo.py", line 271, in awrap_model_call
    return await handler(request.override(system_message=new_system_message))
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/Python/rag-agent/.venv/lib/python3.13/site-packages/langchain/agents/factory.py", line 376, in inner_handler
    inner_result = await inner(req, handler)
                   ^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/Python/rag-agent/.venv/lib/python3.13/site-packages/langchain/agents/factory.py", line 386, in composed
    outer_result = await outer(request, inner_handler)
                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3.13/asyncio/futures.py", line 286, in __await__
    yield self  # This tells Task to wait for completion.
    ^^^^^^^^^^
  File "/usr/lib/python3.13/asyncio/tasks.py", line 375, in __wakeup
    future.result()
    ~~~~~~~~~~~~~^^
  File "/usr/lib/python3.13/asyncio/futures.py", line 199, in result
    raise self._exception.with_traceback(self._exception_tb)
  File "/usr/lib/python3.13/asyncio/tasks.py", line 304, in __step_run_and_handle_result
    result = coro.send(None)
  File "/usr/src/Python/rag-agent/.venv/lib/python3.13/site-packages/deepagents/middleware/filesystem.py", line 1126, in awrap_model_call
    return await handler(request)
           ^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/Python/rag-agent/.venv/lib/python3.13/site-packages/langchain/agents/factory.py", line 376, in inner_handler
    inner_result = await inner(req, handler)
                   ^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/Python/rag-agent/.venv/lib/python3.13/site-packages/langchain/agents/factory.py", line 386, in composed
    outer_result = await outer(request, inner_handler)
                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3.13/asyncio/futures.py", line 286, in __await__
    yield self  # This tells Task to wait for completion.
    ^^^^^^^^^^
  File "/usr/lib/python3.13/asyncio/tasks.py", line 375, in __wakeup
    future.result()
    ~~~~~~~~~~~~~^^
  File "/usr/lib/python3.13/asyncio/futures.py", line 199, in result
    raise self._exception.with_traceback(self._exception_tb)
  File "/usr/lib/python3.13/asyncio/tasks.py", line 304, in __step_run_and_handle_result
    result = coro.send(None)
  File "/usr/src/Python/rag-agent/.venv/lib/python3.13/site-packages/deepagents/middleware/subagents.py", line 691, in awrap_model_call
    return await handler(request.override(system_message=new_system_message))
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/Python/rag-agent/.venv/lib/python3.13/site-packages/langchain/agents/factory.py", line 376, in inner_handler
    inner_result = await inner(req, handler)
                   ^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/Python/rag-agent/.venv/lib/python3.13/site-packages/langchain/agents/factory.py", line 386, in composed
    outer_result = await outer(request, inner_handler)
                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3.13/asyncio/futures.py", line 286, in __await__
    yield self  # This tells Task to wait for completion.
    ^^^^^^^^^^
  File "/usr/lib/python3.13/asyncio/tasks.py", line 375, in __wakeup
    future.result()
    ~~~~~~~~~~~~~^^
  File "/usr/lib/python3.13/asyncio/futures.py", line 199, in result
    raise self._exception.with_traceback(self._exception_tb)
  File "/usr/lib/python3.13/asyncio/tasks.py", line 304, in __step_run_and_handle_result
    result = coro.send(None)
  File "/usr/src/Python/rag-agent/.venv/lib/python3.13/site-packages/deepagents/middleware/summarization.py", line 1024, in awrap_model_call
    return await handler(request.override(messages=truncated_messages))
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/Python/rag-agent/.venv/lib/python3.13/site-packages/langchain/agents/factory.py", line 376, in inner_handler
    inner_result = await inner(req, handler)
                   ^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3.13/asyncio/futures.py", line 286, in __await__
    yield self  # This tells Task to wait for completion.
    ^^^^^^^^^^
  File "/usr/lib/python3.13/asyncio/tasks.py", line 375, in __wakeup
    future.result()
    ~~~~~~~~~~~~~^^
  File "/usr/lib/python3.13/asyncio/futures.py", line 199, in result
    raise self._exception.with_traceback(self._exception_tb)
  File "/usr/lib/python3.13/asyncio/tasks.py", line 304, in __step_run_and_handle_result
    result = coro.send(None)
  File "/usr/src/Python/rag-agent/.venv/lib/python3.13/site-packages/langchain_anthropic/middleware/prompt_caching.py", line 180, in awrap_model_call
    return await handler(request)
           ^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/Python/rag-agent/.venv/lib/python3.13/site-packages/langchain/agents/factory.py", line 1330, in _execute_model_async
    output = await model_.ainvoke(messages)
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/Python/rag-agent/.venv/lib/python3.13/site-packages/langchain_core/runnables/base.py", line 5708, in ainvoke
    return await self.bound.ainvoke(
           ^^^^^^^^^^^^^^^^^^^^^^^^^
    ...<3 lines>...
    )
    ^
  File "/usr/src/Python/rag-agent/.venv/lib/python3.13/site-packages/langchain_core/language_models/chat_models.py", line 477, in ainvoke
    llm_result = await self.agenerate_prompt(
                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    ...<8 lines>...
    )
    ^
  File "/usr/src/Python/rag-agent/.venv/lib/python3.13/site-packages/langchain_core/language_models/chat_models.py", line 1196, in agenerate_prompt
    return await self.agenerate(
           ^^^^^^^^^^^^^^^^^^^^^
        prompt_messages, stop=stop, callbacks=callbacks, **kwargs
        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    )
    ^
  File "/usr/src/Python/rag-agent/.venv/lib/python3.13/site-packages/langchain_core/language_models/chat_models.py", line 1154, in agenerate
    raise exceptions[0]
  File "/usr/lib/python3.13/asyncio/tasks.py", line 304, in __step_run_and_handle_result
    result = coro.send(None)
  File "/usr/src/Python/rag-agent/.venv/lib/python3.13/site-packages/langchain_core/language_models/chat_models.py", line 1423, in _agenerate_with_cache
    result = await self._agenerate(
             ^^^^^^^^^^^^^^^^^^^^^^
        messages, stop=stop, run_manager=run_manager, **kwargs
        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    )
    ^
  File "/usr/src/Python/rag-agent/.venv/lib/python3.13/site-packages/langchain_ollama/chat_models.py", line 1208, in _agenerate
    final_chunk = await self._achat_stream_with_aggregation(
                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
        messages, stop, run_manager, verbose=self.verbose, **kwargs
        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    )
    ^
  File "/usr/src/Python/rag-agent/.venv/lib/python3.13/site-packages/langchain_ollama/chat_models.py", line 991, in _achat_stream_with_aggregation
    async for chunk in self._aiterate_over_stream(messages, stop, **kwargs):
    ...<9 lines>...
            )
  File "/usr/src/Python/rag-agent/.venv/lib/python3.13/site-packages/langchain_ollama/chat_models.py", line 1131, in _aiterate_over_stream
    async for stream_resp in self._acreate_chat_stream(messages, stop, **kwargs):
    ...<52 lines>...
            yield chunk
  File "/usr/src/Python/rag-agent/.venv/lib/python3.13/site-packages/langchain_ollama/chat_models.py", line 937, in _acreate_chat_stream
    async for part in await self._async_client.chat(**chat_params):
        yield part
  File "/usr/src/Python/rag-agent/.venv/lib/python3.13/site-packages/ollama/_client.py", line 762, in inner
    raise ResponseError(err)
ollama._types.ResponseError: error parsing tool call: raw='[
  {
    "task": "Research and provide comprehensive explanation of task decomposition, including definition, purpose, typical methods, and citations.",
    "status": "pending"
  }
]', err=json: cannot unmarshal array into Go value of type api.ToolCallFunctionArguments (status code: -1)

---

System Information
------------------
> OS:  Linux
> OS Version:  #20-Ubuntu SMP PREEMPT_DYNAMIC Fri Mar 13 20:07:29 UTC 2026
> Python Version:  3.13.7 (main, Mar  3 2026, 12:19:54) [GCC 15.2.0]

Package Information
-------------------
> langchain_core: 1.2.26
> langchain: 1.2.15
> langchain_community: 0.4.1
> langsmith: 0.7.25
> deepagents: 0.4.12
> langchain_anthropic: 1.4.0
> langchain_classic: 1.0.3
> langchain_google_genai: 4.2.1
> langchain_neo4j: 0.9.0
> langchain_ollama: 1.0.1
> langchain_openai: 1.1.12
> langchain_postgres: 0.0.17
> langchain_text_splitters: 1.1.1
> langgraph_api: 0.7.27
> langgraph_cli: 0.4.19
> langgraph_runtime_inmem: 0.24.1
> langgraph_sdk: 0.3.12

Optional packages not installed
-------------------------------
> deepagents-cli

Other Dependencies
------------------
> aiohttp: 3.13.5
> anthropic: 0.89.0
> asyncpg: 0.31.0
> blockbuster: 1.5.26
> click: 8.3.2
> cloudpickle: 3.1.2
> croniter: 6.2.2
> cryptography: 46.0.6
> dataclasses-json: 0.6.7
> filetype: 1.2.0
> google-genai: 1.70.0
> grpcio: 1.80.0
> grpcio-health-checking: 1.80.0
> grpcio-tools: 1.75.1
> httpx: 0.28.1
> httpx-sse: 0.4.3
> jsonpatch: 1.33
> jsonschema-rs: 0.29.1
> langgraph: 1.1.6
> langgraph-checkpoint: 4.0.1
> neo4j: 6.1.0
> neo4j-graphrag: 1.14.1
> numpy: 2.4.4
> ollama: 0.6.1
> openai: 2.30.0
> opentelemetry-api: 1.40.0
> opentelemetry-exporter-otlp-proto-http: 1.40.0
> opentelemetry-sdk: 1.40.0
> orjson: 3.11.8
> packaging: 26.0
> pgvector: 0.3.6
> protobuf: 6.33.6
> psycopg: 3.3.3
> psycopg-pool: 3.3.0
> pydantic: 2.12.5
> pydantic-settings: 2.13.1
> pyjwt: 2.12.1
> pytest: 9.0.2
> python-dotenv: 1.2.2
> pyyaml: 6.0.3
> PyYAML: 6.0.3
> requests: 2.33.1
> requests-toolbelt: 1.0.0
> SQLAlchemy: 2.0.49
> sqlalchemy: 2.0.49
> sse-starlette: 2.1.3
> starlette: 1.0.0
> structlog: 25.5.0
> tenacity: 9.1.4
> tiktoken: 0.12.0
> truststore: 0.10.4
> typing-extensions: 4.15.0
> uuid-utils: 0.14.1
> uvicorn: 0.43.0
> watchfiles: 1.1.1
> wcmatch: 10.1
> websockets: 16.0
> xxhash: 3.6.0
> zstandard: 0.25.0
RAW_BUFFERClick to expand / collapse

Checked other resources

  • This is a bug, not a usage question.
  • I added a clear and descriptive title that summarizes this issue.
  • I used the GitHub search to find a similar question and didn't find it.
  • I am sure that this is a bug in LangChain rather than my code.
  • The bug is not resolved by updating to the latest stable version of LangChain (or the specific integration package).
  • This is not related to the langchain-community package.
  • I posted a self-contained, minimal, reproducible example. A maintainer can copy it and run it AS IS.

Package (Required)

  • langchain
  • langchain-openai
  • langchain-anthropic
  • langchain-classic
  • langchain-core
  • langchain-model-profiles
  • langchain-tests
  • langchain-text-splitters
  • langchain-chroma
  • langchain-deepseek
  • langchain-exa
  • langchain-fireworks
  • langchain-groq
  • langchain-huggingface
  • langchain-mistralai
  • langchain-nomic
  • langchain-ollama
  • langchain-openrouter
  • langchain-perplexity
  • langchain-qdrant
  • langchain-xai
  • Other / not sure / general

Related Issues / PRs

No response

Reproduction Steps / Example Code (Python)

https://github.com/khteh/rag-agent/blob/master/src/rag_agent/RAGAgent.py

Error Message and Stack Trace (if applicable)

Traceback (most recent call last):
  File "/usr/src/Python/rag-agent/src/rag_agent/RAGAgent.py", line 250, in ChatAgent
    async for stream_mode, data in self._agent.astream( # The output of each step in the graph. The output shape depends on the stream_mode.
    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    ...<16 lines>...
                    await output_queue.put(update) # Queue the state object. Not the message: update["messages"][-1]
                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/Python/rag-agent/.venv/lib/python3.13/site-packages/langgraph/pregel/main.py", line 3128, in astream
    async for _ in runner.atick(
    ...<16 lines>...
            yield o
  File "/usr/src/Python/rag-agent/.venv/lib/python3.13/site-packages/langgraph/pregel/_runner.py", line 304, in atick
    await arun_with_retry(
    ...<15 lines>...
    )
  File "/usr/src/Python/rag-agent/.venv/lib/python3.13/site-packages/langgraph/pregel/_retry.py", line 242, in arun_with_retry
    return await task.proc.ainvoke(task.input, config)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/Python/rag-agent/.venv/lib/python3.13/site-packages/langgraph/_internal/_runnable.py", line 705, in ainvoke
    input = await asyncio.create_task(
            ^^^^^^^^^^^^^^^^^^^^^^^^^^
        step.ainvoke(input, config, **kwargs), context=context
        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    )
    ^
  File "/usr/lib/python3.13/asyncio/futures.py", line 286, in __await__
    yield self  # This tells Task to wait for completion.
    ^^^^^^^^^^
  File "/usr/lib/python3.13/asyncio/tasks.py", line 375, in __wakeup
    future.result()
    ~~~~~~~~~~~~~^^
  File "/usr/lib/python3.13/asyncio/futures.py", line 199, in result
    raise self._exception.with_traceback(self._exception_tb)
  File "/usr/lib/python3.13/asyncio/tasks.py", line 304, in __step_run_and_handle_result
    result = coro.send(None)
  File "/usr/src/Python/rag-agent/.venv/lib/python3.13/site-packages/langgraph/_internal/_runnable.py", line 473, in ainvoke
    ret = await self.afunc(*args, **kwargs)
          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/Python/rag-agent/.venv/lib/python3.13/site-packages/langchain/agents/factory.py", line 1361, in amodel_node
    result = await awrap_model_call_handler(request, _execute_model_async)
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/Python/rag-agent/.venv/lib/python3.13/site-packages/langchain/agents/factory.py", line 386, in composed
    outer_result = await outer(request, inner_handler)
                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3.13/asyncio/futures.py", line 286, in __await__
    yield self  # This tells Task to wait for completion.
    ^^^^^^^^^^
  File "/usr/lib/python3.13/asyncio/tasks.py", line 375, in __wakeup
    future.result()
    ~~~~~~~~~~~~~^^
  File "/usr/lib/python3.13/asyncio/futures.py", line 199, in result
    raise self._exception.with_traceback(self._exception_tb)
  File "/usr/lib/python3.13/asyncio/tasks.py", line 304, in __step_run_and_handle_result
    result = coro.send(None)
  File "/usr/src/Python/rag-agent/.venv/lib/python3.13/site-packages/langchain/agents/middleware/todo.py", line 271, in awrap_model_call
    return await handler(request.override(system_message=new_system_message))
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/Python/rag-agent/.venv/lib/python3.13/site-packages/langchain/agents/factory.py", line 376, in inner_handler
    inner_result = await inner(req, handler)
                   ^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/Python/rag-agent/.venv/lib/python3.13/site-packages/langchain/agents/factory.py", line 386, in composed
    outer_result = await outer(request, inner_handler)
                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3.13/asyncio/futures.py", line 286, in __await__
    yield self  # This tells Task to wait for completion.
    ^^^^^^^^^^
  File "/usr/lib/python3.13/asyncio/tasks.py", line 375, in __wakeup
    future.result()
    ~~~~~~~~~~~~~^^
  File "/usr/lib/python3.13/asyncio/futures.py", line 199, in result
    raise self._exception.with_traceback(self._exception_tb)
  File "/usr/lib/python3.13/asyncio/tasks.py", line 304, in __step_run_and_handle_result
    result = coro.send(None)
  File "/usr/src/Python/rag-agent/.venv/lib/python3.13/site-packages/deepagents/middleware/filesystem.py", line 1126, in awrap_model_call
    return await handler(request)
           ^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/Python/rag-agent/.venv/lib/python3.13/site-packages/langchain/agents/factory.py", line 376, in inner_handler
    inner_result = await inner(req, handler)
                   ^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/Python/rag-agent/.venv/lib/python3.13/site-packages/langchain/agents/factory.py", line 386, in composed
    outer_result = await outer(request, inner_handler)
                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3.13/asyncio/futures.py", line 286, in __await__
    yield self  # This tells Task to wait for completion.
    ^^^^^^^^^^
  File "/usr/lib/python3.13/asyncio/tasks.py", line 375, in __wakeup
    future.result()
    ~~~~~~~~~~~~~^^
  File "/usr/lib/python3.13/asyncio/futures.py", line 199, in result
    raise self._exception.with_traceback(self._exception_tb)
  File "/usr/lib/python3.13/asyncio/tasks.py", line 304, in __step_run_and_handle_result
    result = coro.send(None)
  File "/usr/src/Python/rag-agent/.venv/lib/python3.13/site-packages/deepagents/middleware/subagents.py", line 691, in awrap_model_call
    return await handler(request.override(system_message=new_system_message))
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/Python/rag-agent/.venv/lib/python3.13/site-packages/langchain/agents/factory.py", line 376, in inner_handler
    inner_result = await inner(req, handler)
                   ^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/Python/rag-agent/.venv/lib/python3.13/site-packages/langchain/agents/factory.py", line 386, in composed
    outer_result = await outer(request, inner_handler)
                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3.13/asyncio/futures.py", line 286, in __await__
    yield self  # This tells Task to wait for completion.
    ^^^^^^^^^^
  File "/usr/lib/python3.13/asyncio/tasks.py", line 375, in __wakeup
    future.result()
    ~~~~~~~~~~~~~^^
  File "/usr/lib/python3.13/asyncio/futures.py", line 199, in result
    raise self._exception.with_traceback(self._exception_tb)
  File "/usr/lib/python3.13/asyncio/tasks.py", line 304, in __step_run_and_handle_result
    result = coro.send(None)
  File "/usr/src/Python/rag-agent/.venv/lib/python3.13/site-packages/deepagents/middleware/summarization.py", line 1024, in awrap_model_call
    return await handler(request.override(messages=truncated_messages))
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/Python/rag-agent/.venv/lib/python3.13/site-packages/langchain/agents/factory.py", line 376, in inner_handler
    inner_result = await inner(req, handler)
                   ^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3.13/asyncio/futures.py", line 286, in __await__
    yield self  # This tells Task to wait for completion.
    ^^^^^^^^^^
  File "/usr/lib/python3.13/asyncio/tasks.py", line 375, in __wakeup
    future.result()
    ~~~~~~~~~~~~~^^
  File "/usr/lib/python3.13/asyncio/futures.py", line 199, in result
    raise self._exception.with_traceback(self._exception_tb)
  File "/usr/lib/python3.13/asyncio/tasks.py", line 304, in __step_run_and_handle_result
    result = coro.send(None)
  File "/usr/src/Python/rag-agent/.venv/lib/python3.13/site-packages/langchain_anthropic/middleware/prompt_caching.py", line 180, in awrap_model_call
    return await handler(request)
           ^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/Python/rag-agent/.venv/lib/python3.13/site-packages/langchain/agents/factory.py", line 1330, in _execute_model_async
    output = await model_.ainvoke(messages)
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/Python/rag-agent/.venv/lib/python3.13/site-packages/langchain_core/runnables/base.py", line 5708, in ainvoke
    return await self.bound.ainvoke(
           ^^^^^^^^^^^^^^^^^^^^^^^^^
    ...<3 lines>...
    )
    ^
  File "/usr/src/Python/rag-agent/.venv/lib/python3.13/site-packages/langchain_core/language_models/chat_models.py", line 477, in ainvoke
    llm_result = await self.agenerate_prompt(
                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    ...<8 lines>...
    )
    ^
  File "/usr/src/Python/rag-agent/.venv/lib/python3.13/site-packages/langchain_core/language_models/chat_models.py", line 1196, in agenerate_prompt
    return await self.agenerate(
           ^^^^^^^^^^^^^^^^^^^^^
        prompt_messages, stop=stop, callbacks=callbacks, **kwargs
        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    )
    ^
  File "/usr/src/Python/rag-agent/.venv/lib/python3.13/site-packages/langchain_core/language_models/chat_models.py", line 1154, in agenerate
    raise exceptions[0]
  File "/usr/lib/python3.13/asyncio/tasks.py", line 304, in __step_run_and_handle_result
    result = coro.send(None)
  File "/usr/src/Python/rag-agent/.venv/lib/python3.13/site-packages/langchain_core/language_models/chat_models.py", line 1423, in _agenerate_with_cache
    result = await self._agenerate(
             ^^^^^^^^^^^^^^^^^^^^^^
        messages, stop=stop, run_manager=run_manager, **kwargs
        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    )
    ^
  File "/usr/src/Python/rag-agent/.venv/lib/python3.13/site-packages/langchain_ollama/chat_models.py", line 1208, in _agenerate
    final_chunk = await self._achat_stream_with_aggregation(
                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
        messages, stop, run_manager, verbose=self.verbose, **kwargs
        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    )
    ^
  File "/usr/src/Python/rag-agent/.venv/lib/python3.13/site-packages/langchain_ollama/chat_models.py", line 991, in _achat_stream_with_aggregation
    async for chunk in self._aiterate_over_stream(messages, stop, **kwargs):
    ...<9 lines>...
            )
  File "/usr/src/Python/rag-agent/.venv/lib/python3.13/site-packages/langchain_ollama/chat_models.py", line 1131, in _aiterate_over_stream
    async for stream_resp in self._acreate_chat_stream(messages, stop, **kwargs):
    ...<52 lines>...
            yield chunk
  File "/usr/src/Python/rag-agent/.venv/lib/python3.13/site-packages/langchain_ollama/chat_models.py", line 937, in _acreate_chat_stream
    async for part in await self._async_client.chat(**chat_params):
        yield part
  File "/usr/src/Python/rag-agent/.venv/lib/python3.13/site-packages/ollama/_client.py", line 762, in inner
    raise ResponseError(err)
ollama._types.ResponseError: error parsing tool call: raw='[
  {
    "task": "Research and provide comprehensive explanation of task decomposition, including definition, purpose, typical methods, and citations.",
    "status": "pending"
  }
]', err=json: cannot unmarshal array into Go value of type api.ToolCallFunctionArguments (status code: -1)

Description

Another langchain-ollama stability issue?

System Info

System Information
------------------
> OS:  Linux
> OS Version:  #20-Ubuntu SMP PREEMPT_DYNAMIC Fri Mar 13 20:07:29 UTC 2026
> Python Version:  3.13.7 (main, Mar  3 2026, 12:19:54) [GCC 15.2.0]

Package Information
-------------------
> langchain_core: 1.2.26
> langchain: 1.2.15
> langchain_community: 0.4.1
> langsmith: 0.7.25
> deepagents: 0.4.12
> langchain_anthropic: 1.4.0
> langchain_classic: 1.0.3
> langchain_google_genai: 4.2.1
> langchain_neo4j: 0.9.0
> langchain_ollama: 1.0.1
> langchain_openai: 1.1.12
> langchain_postgres: 0.0.17
> langchain_text_splitters: 1.1.1
> langgraph_api: 0.7.27
> langgraph_cli: 0.4.19
> langgraph_runtime_inmem: 0.24.1
> langgraph_sdk: 0.3.12

Optional packages not installed
-------------------------------
> deepagents-cli

Other Dependencies
------------------
> aiohttp: 3.13.5
> anthropic: 0.89.0
> asyncpg: 0.31.0
> blockbuster: 1.5.26
> click: 8.3.2
> cloudpickle: 3.1.2
> croniter: 6.2.2
> cryptography: 46.0.6
> dataclasses-json: 0.6.7
> filetype: 1.2.0
> google-genai: 1.70.0
> grpcio: 1.80.0
> grpcio-health-checking: 1.80.0
> grpcio-tools: 1.75.1
> httpx: 0.28.1
> httpx-sse: 0.4.3
> jsonpatch: 1.33
> jsonschema-rs: 0.29.1
> langgraph: 1.1.6
> langgraph-checkpoint: 4.0.1
> neo4j: 6.1.0
> neo4j-graphrag: 1.14.1
> numpy: 2.4.4
> ollama: 0.6.1
> openai: 2.30.0
> opentelemetry-api: 1.40.0
> opentelemetry-exporter-otlp-proto-http: 1.40.0
> opentelemetry-sdk: 1.40.0
> orjson: 3.11.8
> packaging: 26.0
> pgvector: 0.3.6
> protobuf: 6.33.6
> psycopg: 3.3.3
> psycopg-pool: 3.3.0
> pydantic: 2.12.5
> pydantic-settings: 2.13.1
> pyjwt: 2.12.1
> pytest: 9.0.2
> python-dotenv: 1.2.2
> pyyaml: 6.0.3
> PyYAML: 6.0.3
> requests: 2.33.1
> requests-toolbelt: 1.0.0
> SQLAlchemy: 2.0.49
> sqlalchemy: 2.0.49
> sse-starlette: 2.1.3
> starlette: 1.0.0
> structlog: 25.5.0
> tenacity: 9.1.4
> tiktoken: 0.12.0
> truststore: 0.10.4
> typing-extensions: 4.15.0
> uuid-utils: 0.14.1
> uvicorn: 0.43.0
> watchfiles: 1.1.1
> wcmatch: 10.1
> websockets: 16.0
> xxhash: 3.6.0
> zstandard: 0.25.0

extent analysis

TL;DR

The issue is likely caused by an incompatibility between the langchain-ollama package and the ollama client, resulting in a ResponseError when trying to parse a tool call.

Guidance

  • Verify that the langchain-ollama package is compatible with the ollama client version being used.
  • Check the ollama client documentation to ensure that the tool_call function is being used correctly.
  • Consider updating the langchain-ollama package to the latest version to ensure compatibility with the ollama client.
  • Review the error message and stack trace to identify any specific issues with the code or configuration.

Example

No specific code example can be provided without more information about the implementation, but reviewing the langchain-ollama documentation and ensuring that the tool_call function is being used correctly may help resolve the issue.

Notes

The issue may be related to a version incompatibility between the langchain-ollama package and the ollama client. Further investigation is needed to determine the root cause of the issue.

Recommendation

Apply a workaround by checking the compatibility of the langchain-ollama package with the ollama client and updating the package if necessary. This may involve reviewing the documentation for both packages and ensuring that the tool_call function is being used correctly.

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