Drupal 10 deprecation error details

Namespace declaration statement has to be the very first statement in the script on line 5

Occurence count Affected project count Occurs in a top X project by usage Category
1 1 10000 Other problem
Filter projects
Project Top X by usage Occurrences Sort ascending
clever_reach 1.9 10000 1

Results are from dataset #9198 from 2023-01-22T15:05. Report is ran by the Drupal Association regularly.