Comment line with index: `UNQ_C2` wasn't found in code

Kindly help me . I’m getting above error on submission with 0 grade

Most likely you deleted the line of code that contained the “UNQ_C2” tag.
So the grader doesn’t know how to identify that part of the assignment.

The best course is to install a new copy of the assignment and start over. Use the “Help” tab to get a fresh copy of the assignment.