public function getClone($user_id, $webinar_id)
 {
     $user = User::find($user_id);
     $webinar = Webinar::where('uuid', '=', $webinar_id)->first();
     $enabled_streaming_servers = StreamingServer::where('enabled', '=', 1)->get();
     $subscribersLists = $user->subscribers_lists()->where("webinar_id", "=", NULL)->get();
     $webinar_list = $webinar->webinar_subscriber_list()->first();
     return $this->view('partials.webinars.clone', compact('webinar', 'enabled_streaming_servers', 'subscribersLists', 'webinar_list', 'panelists'));
 }