C1_W3_ compute_cost

where, I am wrong?

Hello @Pankaj_Kr_Yadav
Posting code here is against the community guidelines. Delete your code and post the complete error trace

sorry I am not aware of this
how to delete

There is pencil symbol below your post . click on that and then delete

now Is it ok?
regards guidlines

The issue is that your code doesn’t compute the cost correctly.