Fatal error: Uncaught Error: Class "Drupal\Core\Database\Connection" not found in /var/www/mospisatel_clean/web/vendor/drupal/core/modules/mysql/src/Driver/Database/mysql/Connection.php:22 Stack trace: #0 /var/www/mospisatel_clean/web/index.php(9): require_once() #1 {main} thrown in /var/www/mospisatel_clean/web/vendor/drupal/core/modules/mysql/src/Driver/Database/mysql/Connection.php on line 22