Synology / SQlite : Server not reachable after a reboot


I get this error message in my Docker journal after that I reboot my Synology DS218+ :

" AH00558: apache2: Could not reliably determine the server’s fully qualified domain name, using Set the ‘ServerName’ directive globally to suppress this message

I’m using SQlite I guess, I’m not sure.

Thank you in advance