Rails 5 - Facebook authenticate error with omniauth-facebook

Question

I get this error when I try use omniauth-facebook:

Follow my code:

Answer 1

It looks like you are missing the confirmable database columns. Either add them or remove the devise :confirmable modules from your model.

Here are the steps to add the relevant code/schema if you did not install devise with the confirmable module initially: https://github.com/plataformatec/devise/wiki/How-To:-Add-:confirmable-to-Users

Answer 2

I think you forgot to uncomment the code in the devise migration that is needed for using the confirmable module.

  t.string   :confirmation_token
  t.datetime :confirmed_at
  t.datetime :confirmation_sent_at
  t.string   :unconfirmed_email # Only if using reconfirmable