code: public function onErrorLowPri(Event $error)
      {
          if ($error['email'] && $this->cfg['emailMin'] > 0) {
              $throttleSuccess = $this->throttleDataSet($error);
              $tsCutoff = \time() - $this->cfg['emailMin'] * 60;
              $error['email'] = $throttleSuccess && $error['stats']['tsEmailed'] <= $tsCutoff;
          }
          if ($error['email']) {
              $this->emailErr($error);
          }
      }
docs: Email error
  
  @param Event $error error event
  
  @return void