Fatal error: Uncaught Error: Class "Drupal\Core\Runtime\DrupalRuntime" not found in /opt/drupal/vendor/autoload_runtime.php:19 Stack trace: #0 /opt/drupal/web/autoload_runtime.php(22): require() #1 /opt/drupal/web/index.php(13): require_once('/opt/drupal/web...') #2 {main} thrown in /opt/drupal/vendor/autoload_runtime.php on line 19