Warning: include(/var/www/vendor/composer/../../html/core/lib/Drupal/Core/DrupalKernel.php): Failed to open stream: No such file or directory in /var/www/vendor/composer/ClassLoader.php on line 576

Warning: include(): Failed opening '/var/www/vendor/composer/../../html/core/lib/Drupal/Core/DrupalKernel.php' for inclusion (include_path='/var/www/vendor/pear/archive_tar:/var/www/vendor/pear/console_getopt:/var/www/vendor/pear/pear-core-minimal/src:/var/www/vendor/pear/pear_exception:.:/usr/local/lib/php') in /var/www/vendor/composer/ClassLoader.php on line 576

Fatal error: Uncaught Error: Class "Drupal\Core\DrupalKernel" not found in /var/www/html/index.php:16 Stack trace: #0 {main} thrown in /var/www/html/index.php on line 16