404. That’s an error.

The requested URL /users/oauth/?server=facebook&nv_redirect=zZ29fGD52n6stLbpfL0OyvmSTOr_8wQV0beWrAjaCCIkakWJifmjT41C8E-n54E4F6H-10IBUWDgs7iZz59UbOBg18EX4pcgWUsDVAgAXv8%2C was not found on this server. That’s all we know.