API Version 2: Failed to parse JSON response string with 'INVALID_ARGUMENT

Hi, I have this error in the assistant console

API Version 2: Failed to parse JSON response string with 'INVALID_ARGUMENT' error: "(response_metadata.status.details[0]): invalid value Missing @type for any field in google.actions.v2.AppResponse for type Any".

But I have setup the API Version 2 to off in the Dialogflow settings, since this node.js client does not currently supports the Dialogflow v2 api. How to force the v2 then?

[Canain]

@Anshini-Singh since you are using the v1 client library, and firebase functions 1.0.0, you need to change these parts of your code:

Instead of

const DialogflowApp = require('actions-on-google');

It should be

const { DialogflowApp } = require('actions-on-google');

Your original code should throw an error when called since the wildcard import of actions-on-google is not a class and is not instantiable. Check your firebase console function logs for errors.

For Firebase Functions 1.0.0, you need to remove this part:

admin.initializeApp(functions.config().firebase);

[Anshini-Singh]

I am also facing the same issue. Here is the my code snippet. Please let me know if any other information required.

'use strict';

process.env.DEBUG = 'actions-on-google:*';
const DialogflowApp = require('actions-on-google');
const admin = require('firebase-admin');
const functions = require('firebase-functions');

admin.initializeApp(functions.config().firebase);

// a. the action name from the created-intent Dialogflow intent
const Actions = {
  NAME_ACTION : 'created-intent'
};
// b. the parameters that are parsed from the created-intent intent
const Parameters = {
  NUMBER_ARGUMENT : 'number'
};

exports.dialogflowWithFireBase = functions.https.onRequest((request, response) => {
  const app = new DialogflowApp({request, response});
  console.log('Request headers: ' + JSON.stringify(request.headers));
  console.log('Request body: ' + JSON.stringify(request.body));

// c. The function that generates the response
  function replyIntent (app) {
  //  let number = app.getArgument(NUMBER_ARGUMENT);
    app.tell('Hello there your are in firebase functions');
  }

// d. build an action map, which maps intent names to functions
  let actionMap = new Map();
  actionMap.set(Actions.NAME_ACTION, replyIntent);
app.handleRequest(actionMap);
});

and these are the dependencies in my package.json

{
    "actions-on-google": "1.10.0",
    "firebase-admin": "~5.11.0",
    "firebase-functions": "^1.0.0"
  }