code: private function showPermissionError(PermissionError $e)
      {
          if (PHP_SAPI !== "cli")
          {
              http_response_code(500);
              header("Content-type: text/plain");
          }
  
          if ($this->dev)
          {
              $file = $e->path;
              echo "{$e->getMessage()}\n";
              echo "\n";
              echo WF::str($e, false);
          }
          else
          {
              echo "A permission error is preventing this page from displaying properly.";
          }
          die();
      }
docs: Helper to display permission errors when system setup fails due to
  broken permissions.