404. That’s an error.

The requested URL /users/oauth/?server=facebook&nv_redirect=JLBISf9WcWUOWJfwHn20VVAQsI3r_nVWyv_8mU0ElxmotZLQsV00fqtrFvibQGtdKKar2sFiJG6nlIIu4eDfnRdaujI2ygRry4uh7NTXnZw%2C was not found on this server. That’s all we know.