Week 1 assignment got: <class 'NoneType'> error

Course Q&A Machine Learning Engineering for Production(MLOps) Machine Learning Data Lifecycle in Production
1

I don’t know why this error is popping up

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output from my code matches the expected results. I submitted multiple times, rebooted the server, used the get latest version option. None of them are working. Unable to pass this assignment because of this error

2

Please check notebook metadata and refresh the workspace if required / in doubt. If that doesn’t help, please click my name and message your notebook as an attachment.