I can't figure out any cause for this error : "Cell #16. Can't compile the student's code. Error: TypeError('only size-1 arrays can be converted to Python scalars')"

Course Q&A Machine Learning Specialization Supervised ML: Regression and Classification
1

I can’t figure out any cause for this error : “Cell #16. Can’t compile the student’s code. Error: TypeError(‘only size-1 arrays can be converted to Python scalars’)”

There were some others with the same error, but there were mostly unrelated.

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2

Please post the entire assert stack - the exact content of the error message is very important.

Please use a screen capture image - not a text copy-and-paste.

Reminder: Please do not post your code for the assignment.

3

Please check that your dj_db is a scalar, a single number and not an array