dify - 💡(How to fix) Fix suggested-questions always fails

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Dify version

1.14.2

Cloud or Self Hosted

Self Hosted (Docker)

Steps to reproduce

enable suggested questions in agent settings.

✔️ Expected Behavior

suggested questions should work

❌ Actual Behavior

2026-05-21 08:05:42.321 INFO [Dummy-90] [update_provider_when_message_created.py:177] e2fc45e85a555a60b42ad1fdd8ef34dd - Provider updates completed successfully. Updates: 1, Duration: 0.000506893964484334 s, Tenant: 5f7a8be7-62cb-4564-9f87-efe05b7cc0a7, Provider: langgenius/openai_api_compatible/openai_api_compatible 2026-05-21 08:05:43.296 ERROR [Dummy-93] [message.py:360] ee60ee365b5b5f8e9059a9716b7b104d - internal server error. Traceback (most recent call last): File "/app/api/controllers/console/app/message.py", line 342, in get questions = MessageService.get_suggested_questions_after_answer( ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "/app/api/services/message_service.py", line 300, in get_suggested_questions_after_answer conversation_override_model_configs = _app_model_config_adapter.validate_json( ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "/app/api/.venv/lib/python3.12/site-packages/pydantic/type_adapter.py", line 492, in validate_json return self.validator.validate_json( ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ pydantic_core._pydantic_core.ValidationError: 2 validation errors for AppModelConfigDict annotation_reply Field required [type=missing, input_value={'pre_prompt': '', 'datas...assistant_prefix': ''}}}, input_type=dict] For further information visit https://errors.pydantic.dev/2.12/v/missing more_like_this Field required [type=missing, input_value={'pre_prompt': '', 'datas...assistant_prefix': ''}}}, input_type=dict] For further information visit https://errors.pydantic.dev/2.12/v/missing 2026-05-21 08:05:43.297 ERROR [Dummy-93] [app.py:875] ee60ee365b5b5f8e9059a9716b7b104d - Exception on /console/api/apps/688c2975-d09b-4506-9eec-d869b2af302f/chat-messages/1e2c8805-5a39-4a3c-bc1e-e0b3ac638802/suggested-questions [GET] Traceback (most recent call last): File "/app/api/controllers/console/app/message.py", line 342, in get questions = MessageService.get_suggested_questions_after_answer( ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "/app/api/services/message_service.py", line 300, in get_suggested_questions_after_answer conversation_override_model_configs = _app_model_config_adapter.validate_json( ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "/app/api/.venv/lib/python3.12/site-packages/pydantic/type_adapter.py", line 492, in validate_json return self.validator.validate_json( ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ pydantic_core._pydantic_core.ValidationError: 2 validation errors for AppModelConfigDict annotation_reply Field required [type=missing, input_value={'pre_prompt': '', 'datas...assistant_prefix': ''}}}, input_type=dict] For further information visit https://errors.pydantic.dev/2.12/v/missing more_like_this Field required [type=missing, input_value={'pre_prompt': '', 'datas...assistant_prefix': ''}}}, input_type=dict] For further information visit https://errors.pydantic.dev/2.12/v/missing

During handling of the above exception, another exception occurred:

Traceback (most recent call last): File "/app/api/.venv/lib/python3.12/site-packages/flask/app.py", line 917, in full_dispatch_request rv = self.dispatch_request() ^^^^^^^^^^^^^^^^^^^^^^^ File "/app/api/.venv/lib/python3.12/site-packages/flask/app.py", line 902, in dispatch_request return self.ensure_sync(self.view_functions[rule.endpoint])(**view_args) # type: ignore[no-any-return] ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "/app/api/.venv/lib/python3.12/site-packages/flask_restx/api.py", line 404, in wrapper resp = resource(*args, **kwargs) ^^^^^^^^^^^^^^^^^^^^^^^^^ File "/app/api/.venv/lib/python3.12/site-packages/flask/views.py", line 110, in view return current_app.ensure_sync(self.dispatch_request)(**kwargs) # type: ignore[no-any-return] ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "/app/api/.venv/lib/python3.12/site-packages/flask_restx/resource.py", line 41, in dispatch_request resp = meth(*args, **kwargs) ^^^^^^^^^^^^^^^^^^^^^ File "/app/api/controllers/console/wraps.py", line 225, in decorated return view(*args, **kwargs) ^^^^^^^^^^^^^^^^^^^^^ File "/app/api/libs/login.py", line 100, in decorated_view return current_app.ensure_sync(func)(*args, **kwargs) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "/app/api/controllers/console/wraps.py", line 44, in decorated return view(*args, **kwargs) ^^^^^^^^^^^^^^^^^^^^^ File "/app/api/controllers/console/app/wraps.py", line 77, in decorated_view return view_func(*args, **kwargs) ^^^^^^^^^^^^^^^^^^^^^^^^^^ File "/app/api/controllers/console/app/message.py", line 361, in get raise InternalServerError() werkzeug.exceptions.InternalServerError: 500 Internal Server Error: The server encountered an internal error and was unable to complete your request. Either the server is overloaded or there is an error in the application.