CTHUB - Missing error row number is off by one

[katerinkus]

Describe the Bug
Error row number is incorrect for the missing value error.

Expected Behaviour
If the error is in row 2, CTHub error message should also say 2. missing value errors

Actual Behaviour
If the error is in row 2, CTHub says it is in row 1.

Implications
User sees an incorrect error row location.

Steps To Reproduce
Steps to reproduce the behaviour:
User/Role:

1. Upload file with a missing value (e.g. Applicant Name in the second row in the GER dataset).
2. See error (Rows: 1 not Rows: 2)