magneticeye

This solution also worked for me

1) wp_<customPrefix>_usermeta – look through the “meta_key” column and change all values to the correct prefix (it was about 10 values for me).
2) wp_<customPrefix>_options – in the “option_name” column find an entry that looks like “wp_<customPrefix>_user_roles” and change it to the correct prefix.

I had this problem too, and the TreadStackSize 8388608 solution worked for me on Windows Xampp

I too am getting this exact email, for a lot of users.
[email protected]

Does this mean that they don’t have an email associated with their facebook account? Or is it that they have set a privacy setting?
Or is it a fake facebook account?

If anyone can help out, it would be greatly appreciated!