Common Error Codes

Could be incorrect permissions or ownership on the files/folders. Run fixperms: fixperms -v <user>

Or. on all users: fixperms -v $(cat /etc/trueuserowners | cut -d\: -f1)

A 403 on a CWP server could also indicate ModSecurity rules being triggered. Check /usr/local/apache/domlogs/

perms, or ModSec on CWP

page missing, or permalinks on WP

ModSec on non-CWP

PHP or Apache error

PHP error

Gateway timeout

out of resources