The server took too long to get a response from an upstream server. Bandwidth Limit Exceeded
Search engines like Google may stop crawling or even de-index pages that frequently return 5xx errors. 5xx Server Error
A generic "catch-all" for unexpected server issues, often due to code bugs or misconfigurations. Bad Gateway The server took too long to get a
One server received an invalid response from another server it was trying to talk to. Service Unavailable 5xx Server Error