I have never used the Facebook APIs, but I know many authentication-related APIs do not accept requests from http (non-secured). So, the authentication cannot be tested through a localhost URL, and must be tested on a live domain with https.
I have never used the Facebook APIs, but I know many authentication-related APIs do not accept requests from http (non-secured). So, the authentication cannot be tested through a localhost URL, and must be tested on a live domain with https.