I have been using Socilte package for users login, i m using facebook, google, twiter and github API. All
The reason for getting this error is because Google+ API is not enabled, go on google console account and enable Google+ API.
Open your Google Console Account from Here:console.developers.google.com
Then Go to -> library -> select Google+ API -> Enable
NOTE: If this is not working please change the hosting server and try it