How do you edit the error page from an overage server wide?

[tommy]

I would like to add a little more details to the error page when a site has an overloading issue.

Where is this page that will be shown when an error happens?

[dmelnik3289]

Great article with the phenomenal idea! Thank you for an especially huge article. I really appreciate this great data.

[bogdan.sh]

I guess you are talking about the 508 error page (resource overusage). If so then any guide of customizing error page should work, for example cPanel.