Fatal error: Uncaught Error: Interface 'Concrete\Core\Http\Middleware\StackInterface' not found in /home/gmcguire/public_html/concrete5/concrete/src/Http/Middleware/MiddlewareStack.php:15 Stack trace: #0 {main} thrown in /home/gmcguire/public_html/concrete5/concrete/src/Http/Middleware/MiddlewareStack.php on line 15