[BUG] - v4.3.1 - removed dependent files - 500 error

[TornMarketing]

With the latest upgrade, dependent files such as the autoload.php have been removed along with other structural changes to the mautic app.

As a result things are no longer loading and throwing 500 errors

Resolution: require_once $docroot.'/app/autoload.php'; to require_once $docroot.'/autoload.php';