Fatal error: Uncaught Error: Interface 'Concrete\Core\Service\Manager\ManagerInterface' not found in /home/gmcguire/public_html/concrete5/concrete/src/Service/Manager/ServiceManager.php:7 Stack trace: #0 {main} thrown in /home/gmcguire/public_html/concrete5/concrete/src/Service/Manager/ServiceManager.php on line 7