If you’re getting this:
OpenSSL::SSL::SSLError at /auth/facebook/callback SSL_connect returned=1 errno=0 state=SSLv3 read server certificate B: certificate verify failed
It means that open-ssl cannot find your ca_certs (which live under
/etc/ssl/certs), which is correct if you’re on windows anyway.
If in rails (using Windows), try disabling verification:
You’re going to deploy on Linux any way (and you shouldn’t be developing on an env that isn’t identical to your prod env), but you can at least go on.