An error 500 should be reflected in an error log entry. Have a look at the error log of your hosting. You should be able to see what the actual cause is.
I saw a couple of firewall rules getting hit, but once I disabled them (for now), I still get the 500.
In /var/log/apache2/error_log, I don’t see anything pointing to this site, only a bunch of PHP eact-server.ini syntax errors (we’re running an old version of PHP on the server, but the site is using PHP 7.4).
I’m not much of an admin, so if there is a different error log I should be checking, I welcome the help.
Thanks, much.
A bit of progress (and I uninstalled Wordfence before seeing this). Now the error is:
Warning: Unknown: failed to open stream: No such file or directory in Unknown on line 0
Fatal error: Unknown: Failed opening required ‘/home/corps/public_html/wp/wordfence-waf.php’ (include_path=’.:/opt/cpanel/ea-php74/root/usr/share/pear’) in Unknown on line 0
I got this after moving files to the root folder. This is a link to the original folder (wp) folder, but I don’t know where the link is being referenced. Hunting…
This is definitely a Wordfence migration issue. This error shows up often. Sorry for the bother.
For folks who got this far, when you deactivate WF, you will be walked through a series of steps that will remove WF properly, allowing for the director migration to happen. If I get other errors, I’ll update this, but assume that a proper deactivation of WF before migrating the directory works as WP says it does (which is quite easy, otherwise).
[Update: no errors now, though I can’t access site-editor.php for some reason.]
Anything in the logs about this? If you haven’t done so already, turn on WordPress debugging.