Error generating PR description 'str' object does not support item assignment

[ancaohoang]

Can I help you this error?

[mrT23]

give dramatically more information when opening an issue like this.
Platform, model, and preferably a reproducible example.

My strong guess is that you are using a bad codel model, that does not obey the prompt instructions.
Use a better model

[ancaohoang]

I followed the instructions and used the ollama/llama3.2 model listed here. Is this a better model?

[mrT23]

All models in the world are supported. It doesn't mean they are necessarily good enough for code tasks.

You tried Ollama (you should have stated it clearly in the original message) and saw that it is a bad code model - it doesn't obey the prompt instructions, and does not produce the expected structured output.

Hence, use better models like claude sonnet, gpt-4o, or google gemini.