C1_W2_Linear_Regression error after submission

My code output says all test cases have passed but when I submit my code an error pops up saying “Comment line with index: UNQ_C1 wasn’t found in code”. Please help me solve this error.

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Hi @Anushka_Londhe, this error occurs when you delete some content of notebook which is not meant to be changed.
I think you have deleted “# UNQ_C1” from cell in which you have to compute cost (compute_cost). Try adding # UNQ_C1 at top of that cell and resubmit the assignment.

Thank You so much!! It worked.