Warning: require(/var/www/html/magento2/vendor/composer/../magento/module-integration/registration.php): Failed to open stream: No such file or directory in /var/www/html/magento2/vendor/composer/autoload_real.php on line 41

Fatal error: Uncaught Error: Failed opening required '/var/www/html/magento2/vendor/composer/../magento/module-integration/registration.php' (include_path='.:/usr/share/pear:/usr/share/php') in /var/www/html/magento2/vendor/composer/autoload_real.php:41 Stack trace: #0 /var/www/html/magento2/vendor/composer/autoload_real.php(45): {closure}() #1 /var/www/html/magento2/vendor/autoload.php(25): ComposerAutoloaderInitc96ecaacf3719b75b13057a42d56b271::getLoader() #2 /var/www/html/magento2/app/autoload.php(51): include('...') #3 /var/www/html/magento2/app/bootstrap.php(44): require_once('...') #4 /var/www/html/magento2/pub/index.php(16): require('...') #5 {main} thrown in /var/www/html/magento2/vendor/composer/autoload_real.php on line 41