5xx Server errors
508 Loop Detected
The server found an infinite loop while processing the request.
Common causes
- Some hosts use it when a site exceeds its resource limits.
- WebDAV loops.
How to fix it
- On shared hosting, check resource usage limits and plugins causing loops.
Find out the moment your site returns 508
Spot Downtime monitors count this as down and alert you, since visitors see an error. (The public “Is it down?” checker treats 4xx answers from big sites as online, because many refuse automated requests.)