After updating to PHP version 5.6.23,
Fatal error: require(): Failed opening required 'staffHelp' (include_path='.:/usr/local/php56/pear') in /home/mittensl/public_html/Staff-Lounge.php on line 3
RewriteRule ^staffHelp/?$ Qb0XTST.php [NC,L]
The error message confirms this.
require('staffHelp'); looks for a file
staffHelp, and does not involve Apache's rewrite rules in any way.
Apache's rewrite rules will be applied only, when there's an HTTP request coming in, which doesn't happen, when PHP
includes a file.