The problem would exist if you had ... DebugRedirection=enabled
Yet, the problem should not exist if you had ... DebugRedirection=disabled
Please ensure that you have, DebugRedirection=disabled in your <b>settings/</b> files. specifically <b>settings/override/site.ini.append.php</b> and <b>settings/siteaccess/admin_sitename/site.ini.append.php</b>