dify - 💡(How to fix) Fix 'kwargs' is not defined when using claude-opus-4-7

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Dify version

1.14.1

Cloud or Self Hosted

Cloud

Steps to reproduce

I am using a workflow to create contents. I purchased claude-opus-4-7 API Key and added it in the workflow.

But when I run the workflow with claude-opus-4-7 model, the LLM node turned out with some errors, I paste the result in the Actual Behaviour Section, I want to know how to solve it. This issue suddenly happened, I could run the workflow normally last week, the workflow and parameters are not changed,

✔️ Expected Behavior

the workflow is expected to run successfully, from user input, llm and output

❌ Actual Behavior

Tracing Said: req_id: 9b1b4e5a91 PluginInvokeError: {"args":{"description":"[models] Error: name 'kwargs' is not defined"},"error_type":"InvokeError","message":"[models] Error: name 'kwargs' is not defined"}