M2 graded lab issue

Despite writing the correct code, i keep getting errors like this:
Exercise 1

0/10

Failed test case: generate_draft raised LLMError: An error occurred: Error code: 400 - {‘error’: {‘message’: “Invalid value for ‘content’: expected a string, got null.”, ‘type’: ‘invalid_request_error’, ‘param’: ‘messages.[0].content’, ‘code’: None}}.
Expected:
no exception,
but got:
An error occurred: Error code: 400 - {‘error’: {‘message’: “Invalid value for ‘content’: expected a string, got null.”, ‘type’: ‘invalid_request_error’, ‘param’: ‘messages.[0].content’, ‘code’: None}}.

Exercise 2

0/10

Failed test case: reflect_on_draft raised LLMError: An error occurred: Error code: 400 - {‘error’: {‘message’: “Invalid value for ‘content’: expected a string, got null.”, ‘type’: ‘invalid_request_error’, ‘param’: ‘messages.[0].content’, ‘code’: None}}.
Expected:
no exception,
but got:
An error occurred: Error code: 400 - {‘error’: {‘message’: “Invalid value for ‘content’: expected a string, got null.”, ‘type’: ‘invalid_request_error’, ‘param’: ‘messages.[0].content’, ‘code’: None}}.

Exercise 3

0/10

Failed test case: revise_draft raised AttributeError: ‘NoneType’ object has no attribute ‘choices’.
Expected:
no exception,
but got:
‘NoneType’ object has no attribute ‘choices’.

Hi THEMVM,

I cannot reproduce this error with correct content on my side. If you send me your code by means of a direct message I can have a look.

Just to make sure: Did you save your notebook before submitting?

hi reinoud. i restarted the kernel and saved the notebook and it has worked now