ERROR: Practice Lab Neural Networks for Multiclass classification

I am getting AssertionErrors and NameType Errors again and again even if I copy the code given in the hint section. I don’t what I am missing or doing wrong.

{moderator edit: code removed}

Do not add the function definition statement. That is already provided for you.

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I am so dumb. Thank you so much!

Note: In the future, please don’t post your code - only the error messages or asserts.