Getting the following in our server logs when trying to edit this module in the admin...

PHP Fatal error:  Call to undefined method ControllerModuleFacebooklogin::render() in admin/controller/module/facebooklogin.php on line 258

This is the line in question...

$this->response->setOutput($this->render());

It seems to calling a function in the same template but it is not there?

ok, seem to have partly solved by replacing with...

$this->response->setOutput($this->load->view('module/facebooklogin.tpl', $this->data));

Hello Michael,

Thank you for reaching iSenseLabs.com.

If you are still experiencing issues with FacebookLogin, I will suggest you to open a support ticket from this link - https://isenselabs.com/tickets/open.

Hope this helps!