Warning: Constant DRUPAL_ROOT already defined in /var/www/drupal11/web/core/includes/bootstrap.inc on line 45

Fatal error: Uncaught Error: Call to undefined function drupal_bootstrap() in /var/www/drupal11/web/index.php:14 Stack trace: #0 {main} thrown in /var/www/drupal11/web/index.php on line 14