Fatal error: Uncaught Error: Call to undefined function error_displayable() in /var/www/drupal11/web/core/includes/bootstrap.inc:142 Stack trace: #0 /var/www/drupal11/web/core/includes/bootstrap.inc(126): _drupal_exception_handler_additional() #1 [internal function]: _drupal_exception_handler() #2 {main} thrown in /var/www/drupal11/web/core/includes/bootstrap.inc on line 142