Twitter-omniauth bug after Request Phase on normalized_uri

[1dolinski]

Environment

Gemfile:

ruby "3.1.0"
gem 'rails', '6.0.3.1'

gem 'devise' (4.8.1 in Gemfile.lock)
gem 'omniauth-facebook'
gem 'omniauth-twitter'
gem "omniauth-rails_csrf_protection", "~> 1.0"
link_to for CSRF with POST, previously GET

Current behavior

Upgraded Rails to 6 along with devise.

After updating for this CSRF error #5236 arrived at:

Started POST "/users/auth/twitter" for ::1 at 2022-09-22 21:24:44 -0400
(twitter) Request phase initiated.
(twitter) Authentication failure! undefined method `downcase' for nil:NilClass

        "#{u.scheme.downcase}://#{u.host.downcase}#{(u.scheme.casecmp("http").zero? && u.port != 80) || (u.scheme.casecmp("https").zero? && u.port != 443) ? ":#{u.port}" : ""}#{u.path && u.path != "" ? u.path : "/"}"
                                        ^^^^^^^^^: NoMethodError, undefined method `downcase' for nil:NilClass

Processing by Users::OmniauthCallbacksController#failure as HTML

<%= link_to "Log In" user_twitter_omniauth_authorize_path  method: :post, "data-turbo": false %>

In omniauth.rb

    OmniAuth.config.allowed_request_methods = [:post]
class Users::OmniauthCallbacksController < Devise::OmniauthCallbacksController
    def self.provides_callback_for(provider)
      class_eval %Q{
        def #{provider}
          
          
          @user = User.find_for_oauth(request.env["omniauth.auth"], current_user)
          skip_authorization
          authorize @user, policy_class: OmniauthCallbackPolicy
          if @user.persisted?
            
            @user.remember_me
            sign_in_and_redirect @user, event: :authentication
            set_flash_message(:notice, :success, kind: "#{provider}".capitalize) if is_navigational_format?
          else
            
            session["devise.#{provider}_data"] = request.env["omniauth.auth"]
            redirect_to new_user_registration_url
          end
        end
      }
    end
    
    [:twitter, :facebook, :apple].each do |provider|
      provides_callback_for provider
    end
    
    def failure
      redirect_to root_path
    end
  end

The line of code that errors our seems to be defined here https://rubydoc.info/gems/oauth/0.5.5/OAuth%2FRequestProxy%2FBase:normalized_uri

Expected behavior

I used to be able to login with twitter oauth before this, looking for same

[1dolinski]

Ongoing discussion, with SO bounty here

https://stackoverflow.com/questions/73822206/upgraded-to-rails-6-devise-omniauth-twitter-nomethoderror/73879754#73879754

Open chat here: https://chat.stackoverflow.com/rooms/248415/discussion-between-tibic4-and-1dolinski

[1dolinski]

Updated SO bounty to 100.. still no fix

[OrceMaceski]

This has helped me:
arunagw/omniauth-twitter#141

[nashby]

According to SO accepted answer, this was resolved by upgrading oauth gem