Facebook External doesn't get email value in Nopcommerce 3.60 - facebook

Question

Currently I use NopCommerce 3.60 and use FB External Login.
Problem:
After I login in Nop by FB External Button and it returns to URL mydomain.com/login#_=__ with red message (Email is required) and it does not login user in.
Screenshot: http://postimg.org/image/wvgu6wvud/
What I was try:
Reinstall Nop from scratch and has below setting
In advance setting and option I has:
Externalauthenticationsettings.requireemailvalidation False
Auto register enabled: Checked.
Registration method: Email Validation
I try to debug source code in file name FacebookProviderAuthorizer.cs in Nop.Plugin.ExternalAuth.Facebook folder and also does not get email value too.http://postimg.org/image/qwmphn9tn/
Have anyone suggest me what to do next for this problem please.

Answer 1

Fixed. You can see changeset 5bb6815e30ee

Answer 2

I am not familiar with Nop, but it is possible to register at Facebook without an email. This is why most libraries for fb-oauth checking against eMail and if there is no email, they create an user-id#facebook.com eMail address.
Maybe your Nop library of fb-oauth is out dated?
So please check if there is such a function - if not, you might got your problem.

Answer 3

Somehow FB doesn't include email in oauth. You can use this method to get email and supply that email to register.
//as part of the uri for the webrequest, include all the fields you want to use
var request = WebRequest.Create("https://graph.facebook.com/me?fields=email,name&access_token=" + Uri.EscapeDataString(authorization.AccessToken));
using (var response = request.GetResponse())
{
using (var responseStream = response.GetResponseStream())
{
System.IO.StreamReader streamReader = new System.IO.StreamReader(responseStream, true);
string MyStr = streamReader.ReadToEnd();
JObject userInfo = JObject.Parse(MyStr);
//now you can access elements via:
// (string)userInfo["name"], userInfo["email"], userInfo["id"], etc.
}
}