Error: OpenAI GPT-4.1 mini - 400

[dapavella]

Error Details

Model: OpenAI GPT-4.1 mini
Provider: openai
Status Code: 400

Error Output

400 Invalid 'messages[101].tool_calls[0].function.name': empty string. Expected a string with minimum length 1, but got an empty string instead.

Additional Context
The error accurs on a new esp32 idf platform.io project after:

• adding rules
• several messages in Agent mode including task planning
• message to start executing task (Agent mode)
• and finally got a error after asking to fix errors (I meant to fix build error, but the model found and asked if it could fix some logic errors, I answered "yes")
• after that any message in any mode gives the above error

How can I reset this state? Or maybe overcome an error?
I'm using an online OpenAI model throught OpenAI api, not some local one.

[sestinj]

Related issues:

• Error: GPT-4o Mini - 400 #9784 - Same error: empty function.name in tool_calls (GPT-4o Mini)
• 400 Invalid 'messages[2].tool_calls[0].function.name': empty string. Expected a string with minimum length 1, but got an empty string instead. #5091 - Previously reported and closed: same 400 Invalid 'messages[X].tool_calls[0].function.name': empty string error