Debug Logs
One of the most helpful tools you can use when encountering any issues on your site is your site’s debug logs. This log keeps track of errors that occur and can point you in the direction of what is causing the error. These logs are also frequently asked for by support teams to help quickly locate and solve any conflicts or bugs.
If you need to enable debugging to access your debug logs or would like further information please see the documentation here: Debugging in WordPress.