Error: Functions did not deploy properly with Firebase Cloud functions

[desmeit]

I try to implement it to Firebase Cloud functions but I'm always getting this error message:

Error: Functions did not deploy properly.

My code is very simple and the error comes as soon as i implement in-app-purchase. with or without configs.

const functions = require("firebase-functions");

const iap = require("in-app-purchase");

exports.validateReceipt = functions.https.onRequest(async (req, res) => {
  await iap.setup();
  res.send("test");
});

[famictech2000]

Thy this:

// Init cloud functions
const functions = require('firebase-functions');

const admin = require('firebase-admin');
admin.initializeApp();

var IAPVerifier = require('in-app-purchase');

IAPVerifier.config({

// Configuration variables go here

});