Fatal error: Uncaught Error: Class "Slim\Container" not found in /var/www/html/src/App.php:120 Stack trace: #0 /var/www/html/src/App.php(45): Dashboard\App::createContainer() #1 /var/www/html/public/index.php(18): Dashboard\App::create() #2 {main} thrown in /var/www/html/src/App.php on line 120