code: private function databaseRecordNotFound(Response $response, $primaryKey, TableMapper $tableMapper, string $routeAction, ?string $title = null)
      {
          // $routeAction must be 'update' or 'delete'
          if ($routeAction != 'update' && $routeAction != 'delete') {
              throw new \Exception("routeAction $routeAction must be update or delete");
          }
  
          // enter event
          $this->events->insertWarning(EVENT_QUERY_NO_RESULTS, [$tableMapper->getPrimaryKeyColumnName() => $primaryKey, 'table' => $tableMapper->getTableName()]);
  
          $noticeTitle = ($title != null) ? $title: 'Record';
          SlimPostgres::setAdminNotice("$noticeTitle $primaryKey Not Found", 'failure');
          
          return $response->withRedirect($this->router->pathFor(SlimPostgres::getRouteName(true, $this->routePrefix, 'index')));
      }
docs: this can be used when a record is not found for the given primary key for update and delete attempts