Hope the front end can add an exception handling mechanism

[M1saka10010]

Clear and concise description of the problem

The front end will always show that the AI is Thinking instead of throwing an exception that exceeds the length limit. This interaction can easily confuse users.

Suggested solution

Determine whether the message length exceeds the limit, or handle the error message returned by openai.

Alternative

No response

Additional context

No response

Validations

• Follow our Code of Conduct
• Read the Contributing Guide.
• Check that there isn't already an issue that reports the same bug to avoid creating a duplicate.

[ddiu8081]

We've just added a more detailed error message output. You should now be able to see the cause of the error in the UI.