Summary
Mattermost suddenly crashed and after reboot Web Container doesn't response.
We are using Mattermost with Docker Composer. Mattermost is on Version 3.6.2
Steps to reproduce
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Expected behavior
Mattermost should run normally without just crashing.
Observed behavior
Mattermost crashed suddenly after two weeks of running perfectly normal. We restarted our Server and Mattermost run again until suddenly Mattermost again stoppend working. Looked if again the Database crashed but everything looked perfectly normal (docker-compose ps showed that every container was up). I tried to restart the Web Containe but nothing happend, I could restart the Container. He didn't react to anything until I stoppend the Docker Service and started him again. This happened again some time later. Again the Web Container didn't react to anything.
When I looked into the Database log to understand why the Databased crashed, I saw the following error Message: ERROR: relation "idx_teams_description" does not exist
What was the cause of that error and how to prevent him from happening again?