404. That’s an error.
The requested URL /users/oauth/?server=facebook&nv_redirect=8YohFAH-mHgkflaUY7cVnbpogiNgVliHQL4yTHKAlUpAhoDVFrCu5JeYW5uORhg9 was not found on this server. That’s all we know.
/users/oauth/?server=facebook&nv_redirect=8YohFAH-mHgkflaUY7cVnbpogiNgVliHQL4yTHKAlUpAhoDVFrCu5JeYW5uORhg9