C1W4 - problem grading your submission. Details: 'NoneType' object is not iterable

Hi tutor,

Would like your kind help on C1W4, train_happy_sad_model. I was able to run the whole code inside the Jupyter Notebook and reach > 99.9% accuracy as per assignment requirement, but after clicking submit assignment, below error occured:

Grader Output:
There was a problem grading your submission. Details: ‘NoneType’ object is not iterable

Please advise what had happened. May I get in contact and submit my code for your troubleshooting then. Thank you! Cheers, J1

1 Like

Oh found it’s same issue. Resolved by changing from ‘acc’ to ‘accuracy’ Thank you.