Fatal error: Uncaught Exception: Vendor autoload is not found. Please run 'composer install' under application root directory. in /app/app/autoload.php:46 Stack trace: #0 /app/app/bootstrap.php(44): require_once() #1 /app/pub/static.php(9): require('/app/app/bootst...') #2 {main} thrown in /app/app/autoload.php on line 46