PHP Fatal Error – yii\base\ErrorException

[pkjoshisbp]

Maximum execution time of 600 seconds exceeded
public function getUniqueId()
{
return $this->module ? ltrim($this->module->getUniqueId() . '/' . $this->id, '/') : $this->id;
}

I am getting timeout error while accessing /rbac/route on above function, how I can correct this. In my permission/assignment I don't see all the controller/action or routes listed.