Facebook registration does not deliver data

[w3development-kn]

I get this error on Facebook registration:

An exception occurred while executing 'insert into Users (uName, uEmail, uPassword, uIsValidated, uDateAdded, uLastPasswordChange, uIsFullRecord, uDefaultLanguage, uIsActive) values (?, ?, ?, ?, ?, ?, ?, ?, ?)' with params ["", null, "$2a$12$AwM38XEkc0rgUEOyOm0On.8TAkwdezQp.B0mM\/Jejj7Mf7Xw5haty", 1, "2016-12-22 15:32:54", "2016-12-22 15:32:54", 1, null, 1]:

I have seen that this is a bug that have been fixed but it occured again:
$data["uName"] and $data["uName"] is empty. Like Facebook is not delivering them.

I´m not sure if facebook has changed smth with their registration handle.

[w3development-kn]

Duplicate of #4354