404. That’s an error.

The requested URL /users/oauth/?server=facebook&nv_redirect=pWY3i7Q4u-7o5GYimFZI0O20FIoKAjWkfC9CtdV-WjOJ1mVMk2497kkFVYYDPsRqGAMRVRDrPZdm1qprvN3zxh6q171lcltnbuQ4H_IJ1OE%2C was not found on this server. That’s all we know.