Fatal error: Uncaught Error: Class "Magento\Framework\Component\ComponentRegistrar" not found in /var/www/html/vendor/magento/framework/registration.php:9 Stack trace: #0 /var/www/html/vendor/composer/autoload_real.php(55): require() #1 /var/www/html/vendor/composer/autoload_real.php(38): composerRequirea0c077bccc3fdda4591f07cab6e208dc() #2 /var/www/html/vendor/autoload.php(12): ComposerAutoloaderInita0c077bccc3fdda4591f07cab6e208dc::getLoader() #3 /var/www/html/app/autoload.php(51): include('...') #4 /var/www/html/app/bootstrap.php(44): require_once('...') #5 /var/www/html/pub/index.php(12): require('...') #6 {main} thrown in /var/www/html/vendor/magento/framework/registration.php on line 9