Nov 20, 05:00 UTC
Resolved - Cloudflare is aware of an increase of 5xx errors between 05:00 UTC and 05:17 UTC. This mostly affected requests served by Cloudflare's Paris data centre when connecting to European AWS West origin servers. The cause for this increase was a configuration change by Cloudflare and was resolved by reverting this change.
This is a companion discussion topic for the original entry at https://www.cloudflarestatus.com/incidents/br557pyqdxd1