无法向Google Assistant发送通知(目标意图不是有效的可更新意图。)

当Google Assistant在开发者预览中时,我已经成功地实现了通知,但在这个功能发布后,它们停止了工作。

    jwtClient.authorize(function (err, tokens) {
        let db = fbApp.database("https://[REDACTED].firebaseio.com/").ref();
        //...
        if (uid == undefined) {
            res.status(404).send("Not found");
            return
        }
        console.log(`Sending notification to ${uid}`)
        let notif = {
            userNotification: {
                title: "this is test intent"
            },
            target: {
                userId: uid,
                intent: 'get_location'
            }
        }
        requestLib.post('https://actions.googleapis.com/v2/conversations:send', {
          'auth': {
            'bearer': tokens.access_token
          },
          'json': true,
          'body': { 'customPushMessage': notif, 'isInSandbox': true }
        }, function(err,httpResponse,body) {
          console.log(body);
          res.status(httpResponse.statusCode).send(httpResponse.statusMessage);
        });
    });

响应为400:请求正文错误

{ error: 
   { code: 400,
     message: 'Target intent get_location is not a valid updatable intent. Please check that the intent has been configured for updates.',
     status: 'INVALID_ARGUMENT' } }

我正在使用Dialogflow for intents,但找不到创建“有效的可更新意图”的位置