devise  3.5.10
rails 4.2.4

devise.rb
config.omniauth :facebook, Figaro.env.fb_app_id, Figaro.env.fb_app_secret, callback_url: 'https://chotam.ru/users/auth/facebook/callback',
                  scope: 'email, publish_actions'

class Users::OmniauthCallbacksController < Devise::OmniauthCallbacksController

def facebook
    logger.error "fb here" # IT'S NO OUTPUT HERE ON REQUEST!!!
    logger.error(request.env['omniauth.auth'])
    result = User.find_for_facebook_oauth(request.env["omniauth.auth"], current_user)
    @user = result[:user]
    status = result[:status]
    if @user
      token = request.env["omniauth.auth"]["credentials"]["token"]
      @user.account.update_attribute(:fb_token, token)
      if status[:redirect] == 'added' || status[:redirect] == 'existed'
        flash[status[:key]] = status[:value]
        render 'devise/registrations/edit'
      else
        flash[status[:key]] = status[:value]
        sign_in_and_redirect @user, event: :authentication
      end
    else
      flash[status[:key]] = status[:value]
      redirect_to new_user_registration_url
    end
  end