Fatal error: Uncaught Error: Class "Slim\Middleware\Session" not found in /var/www/html/app/Modules/System/Session/middleware.php:8 Stack trace: #0 /var/www/html/core/app.php(60): require() #1 /var/www/html/public/index.php(8): require('/var/www/html/c...') #2 {main} thrown in /var/www/html/app/Modules/System/Session/middleware.php on line 8