Describe the Bug
When running Umami in multiple containers/instances (ex: in Kubernetes), you need to specify NEXT_SERVER_ACTIONS_ENCRYPTION_KEY as env variable, otherwise Umami / NextJS UI will not work.
Database
PostgreSQL
Relevant log output
Which Umami version are you using? (if relevant)
3.0.0
Which browser are you using? (if relevant)
Safari / Firefox
How are you deploying your application? (if relevant)
kubernetes