A 508 Loop Detected error is a webserver’s code for: "The server halted your request because it detected an infinite redirect or dependency loop.".

How do I fix or troubleshoot a 508 Error?

Common steps include reloading the page in your browser, checking for typos in the URL, verifying server status, clearing browser cache or cookies, and contacting the website owner or server administrator if the error persists.

508 Error | Error-Message.Net

A 508 Loop Detected error is an HTTP status code indicating that the server terminated an operation because it encountered an infinite loop while processing a request with “Depth: infinity”.

(Note: On shared cPanel web hosting, Error 508 is also commonly displayed when a site exceeds its CloudLinux resource limits for concurrent processes or CPU.)

Determining why

In WebDAV, a request attempted to copy or move a directory structure that contained circular symbolic links or recursive bindings.
On cPanel / CloudLinux hosts, your site exceeded its concurrent process limit (maxEntryProcesses) due to high traffic spikes or unoptimized code.

Steps you could possibly take:

Wait a few minutes - On shared hosting, resource spikes often subside within 5 to 10 minutes once concurrent PHP processes finish.
If you are the website owner:
- Check your hosting control panel’s Resource Usage metrics.
- In WebDAV systems, audit folder structures to eliminate recursive directory shortcuts or symlinks.
- Optimize database queries and caching to reduce simultaneous long-running PHP threads.

Source: RFC 5842 Section 7.2 (Binding Extensions to WebDAV)