I think this will generate an index error when `jobs.selects.get_unclassified_failure_count_excluded` returns nothing. You can either confirm the `len()` is non zero or use a different return type:
```
count = self.get_jobs_dhub().execute(
   proc=proc,
   replace=repl,
   debug_show=self.DEBUG,
   return_type='iter').get_column_data('count')
return count
```