Failed to connect .. Temporary failure in name resolution

Hello everyone,
I’m running latest nakama version on Ubuntu.
When I let the server run overnight, I come back the next morning with the folllowing error:

{"level":"error","ts":"2022-11-29T15:19:00.008Z","caller":"server/leaderboard_scheduler.go:383","msg":"Error retrieving tournament to invoke reset callback","error":"failed to connect to `host=cockroachdb user=root database=nakama`: hostname resolving error (lookup cockroachdb: Temporary failure in name resolution)","id":"2"}

I haven’t touched the server in the meantime.
Anyone else experienced this issue?

Looks like some sort of DNS resolution issue, however we cannot provide further assistance for infrastructure outside of our Heroic Cloud offerings.