easywechat小程序客服消息转发

帮看看哪里有问题

public function serve()
    {
        $options = [
            'app_id'    => 'xxxxxxxxx',
            'secret'    => 'xxxxxxxx',
            'token'     => 'xxxxxxxx',
            'log' => [
                'level' => 'debug',
                'file'  => '/tmp/easywechat.log',
            ],
        ];

        $app = Factory::miniProgram($options);

        $server = $app->server;

        $server->push(function($message) use ($app){
            Log::info($message);

            if($message['MsgType'] == 'event' && $message['Event'] == 'user_enter_tempsession') {
                $this->enterEventMsg($message);
            }else{
                $t = new Transfer();
                return $t;
            }
            return "666";
        });

        $server->serve()->send();
    }