'NoneType' object is not subscriptable with FinalAnswerTool

'NoneType' object is not subscriptable with FinalAnswerTool

smolagents FinalAnswerTool crashing with "'NoneType' object is not subscriptable" (also seen as 'Error in generating tool call with model'): it is a bug in how the agent handles a model response with no tool calls (message.toolcalls is None), not your prompt or tool setup. Fixed by PR #614. Upgrade smolagents past the release containing #614; if it is not released yet, install from main: pip install -e PATHTOSMOLAGENTSROOT_DIRECTORY.

Context from the issue

gh:huggingface/smolagents#404: Issue huggingface/smolagents#404 (closed, 9 comments): I am trying to reproduce the agentic RAG cookbook example. But I noticed that the FinalAnswerTool was almost always throwing me an error. I tried with gpt4o (AzureOpenAI) and mistral-large-2407 (OpenAI-compatible API). I also replaced ToolCallingAgent by CodeAgent, the error log is different but it still does not work most of the time. Error: "Error in generating tool call with model: 'NoneType' object is not subscriptable"

Issue gh:huggingface/smolagents#404: the reporter asked: Issue huggingface/smolagents#404 (closed, 9 comments): I am trying to reproduce the agentic RAG cookbook example. But I noticed that the FinalAnswerTool was almost always throwing me an error. I tried with gpt4o (AzureOpenAI) and mistral-large-2407 (OpenAI-compatible API). I also replaced ToolCallingAgent by CodeAgent, the error log is different but it still does not work most of the time. Error: "Error in generating tool call with model: 'NoneType' object is not subscriptable" The verified answer was: smolagents FinalAnswerTool crashing with "'NoneType' object is not subscriptable" (also seen as 'Error in generating tool call with model'): it is a bug in how the agent handles a model response with no tool calls (message.toolcalls is None), not your prompt or tool setup. Fixed by PR #614. Upgrade smolagents past the release containing #614; if it is not released yet, install from main: pip install -e PATHTOSMOLAGENTSROOT_DIRECTORY. Evidence thread: https://github.com/huggingface/smolagents/issues/404