CI session trouble

//login controller
public function login() {
        $provider = $this->uri->rsegment(3);
        $lang = $this->uri->rsegment(4) ? : $this->lang->default;
        if (!$provider || !$this->hybridauthlib->providerEnabled($provider)) {
            $this->_set_404(TRUE);
        } else {
            $instance = $this->_authorize($provider);
            if ($instance) {
                $user_profile = $instance->getUserProfile();
                $token = $instance->getAccessToken();
                $user_data = array(
                    'lang' => $lang,
                    'social_id' => $user_profile->identifier,
                    'social' => strtolower($provider),
                    'photo' => $user_profile->photoURL,
                    'email' => $user_profile->email,
                    'username' => $user_profile->displayName,
                    'first_name' => $user_profile->firstName,
                    'last_name' => $user_profile->lastName,
                    'token' => $token['access_token'],
                );
                $this->hybridauthlib->authorize_user($user_data);
        //there setup flash data
                //$this->session->set_flashdata('success', 'Авторизация успешна');;
                redirect($lang . '/'. strtolower($provider));
            } else {
                //$this->session->set_flashdata('error', 'Произошала ошибка авторизации');
                //redirect($lang . '/auth/login');
            }
        }

    }

//hybrid auth authorize
public function authorize_user($user_data) {
        $newdata = array(
            'social_data' => array(
                'username' => $user_data['username'],
                'email' => $user_data['email'],
                'logged_in' => TRUE,
                'social' => $user_data['social'],
                'photo' => $user_data['photo'],
                'token' => $user_data['token'],
                'social_id' => $user_data['social_id'],
            )
        );
    //setup social accaunt
        $this->session->set_userdata($newdata);

        $this->save_user($user_data);
    }