Appstore, Playstore does not work

[cereme]

my code

var reviews = require('reviews-to-slack')
var apps = [
  {
    appId: '1111111111', //<my-app-code>
    channel: '#channel'
  },
  {
    appId: 'com.myapp',
    channel: '#channel'
  }
]
for (var i = 0; i < apps.length; i++) {
  var app = apps[i]
  reviews.start({
    slackHook: '<my-hooks-url>',
    appId: app.appId,
    channel: app.channel
  })
}

Then I got this:

ERROR: Could not parse feed for <app-id>, Error: no articles
ERROR: [com.myapp] Could not parse JSON in: <google-404-page-HTML>, SyntaxError: Unexpected token < in JSON at position 0