I think Grader for C2W1 is broken for me

Course Q&A Machine Learning Engineering for Production(MLOps) Machine Learning Data Lifecycle in Production
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m getting :

Modifying the domain:

All tests passed! Congratulations!

a​nd then directly after it:

M​odifying the domain:

Failed test case: modify_domain_of_features has incorrect type. Expected: typing.Callable, but got: <class 'NoneType'>.

all cells produce the output described in the excercise and the function is definitely callable in the notebook. I really don’t know where to go from here

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Hi Jeffrey! Welcome to the community! I usually see that error when there is a lingering #grade-up-to-here tag somewhere in the notebook. Kindly check that first then resubmit after removing. If that is not the issue, please reply here. Thanks!

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Thank you so much that solved it for me!
I DID leave a #grade-up-to-here but forgot about it because in my experience it seemed to do nothing

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