Heroku Twitter api app deployment with Rails - ruby-on-rails

Question

I am new to Ruby and Rails in general and am following this series
https://gorails.com/episodes/rails-for-beginners-part-38-deploying-to-heroku
I have this weird issue where is everything seems to work fine except connecting my app with
Twitter Api.
I did everything to connect successfully but nothing seems working!
I added the website link to Twitter developer callbacks urls which are
https://jadwlh.herokuapp.com/
along with
https://jadwlh.herokuapp.com/auth/twitter/callback
I added both
API_KEY
and
API_SECRET
to Config Vars.
I even changed SECRET_KEY_BASE in Config Vars
to the one provided in the credentials file in my app!
Even though tried everything, still got this message shown in the image below when I try to
connect my app with Twitter Api
routes.rb file
# For details on the DSL available within this file, see https://guides.rubyonrails.org/routing.html
Rails.application.routes.draw do
#GET /about
get "about", to: "about#index"
get "password", to: "passwords#edit", as: :edit_password
patch "password", to: "passwords#update"
get "sign_up", to: "registrations#new"
post "sign_up", to: "registrations#create"
delete "logout", to: "sessions#destroy"
get "sign_in", to: "sessions#new"
post "sign_in", to: "sessions#create"
get "password/reset", to: "password_resets#new"
post "password/reset", to: "password_resets#create"
get "password/reset/edit", to: "password_resets#edit"
patch "password/reset/edit", to: "password_resets#update"
get "/auth/twitter/callback", to: "omniauth_callbacks#twitter"
resources :twitter_accounts
resources :tweets
# get "/", to: "main#index"
root to: "main#index"
end
Application logs
2021-05-31T06:15:04.415968+00:00 app[web.1]: [13f44544-8fd2-4348-8b08-1191ad53716b]
2021-05-31T06:15:04.418156+00:00 heroku[router]: at=info method=HEAD path="/auth/failure?message=session_expired&strategy=twitter" host=jadwlh.herokuapp.com request_id=13f44544-8fd2-4348-8b08-1191ad53716b fwd="217.182.175.162" dyno=web.1 connect=0ms service=3ms status=404 bytes=180 protocol=https
2021-05-31T06:15:31.243002+00:00 app[web.1]: I, [2021-05-31T06:15:31.242901 #4] INFO -- : [c5f8ff8c-58fa-439d-a9f3-e08047bc5aa8] Started POST "/auth/twitter" for 46.152.103.96 at 2021-05-31 06:15:31 +0000
2021-05-31T06:15:31.243645+00:00 app[web.1]: D, [2021-05-31T06:15:31.243583 #4] DEBUG -- omniauth: (twitter) Request phase initiated.
2021-05-31T06:15:31.388564+00:00 app[web.1]: E, [2021-05-31T06:15:31.388453 #4] ERROR -- omniauth: (twitter) Authentication failure! 400 Bad Request: OAuth::Unauthorized, 400 Bad Request
2021-05-31T06:15:31.390962+00:00 heroku[router]: at=info method=POST path="/auth/twitter" host=jadwlh.herokuapp.com request_id=c5f8ff8c-58fa-439d-a9f3-e08047bc5aa8 fwd="46.152.103.96" dyno=web.1 connect=1ms service=150ms status=302 bytes=834 protocol=https
2021-05-31T06:15:31.574904+00:00 heroku[router]: at=info method=GET path="/auth/failure?message=400+Bad+Request&strategy=twitter" host=jadwlh.herokuapp.com request_id=3adfd6f0-58b9-47c3-ab04-017161a56e18 fwd="46.152.103.96" dyno=web.1 connect=1ms service=6ms status=404 bytes=1902 protocol=https
2021-05-31T06:15:31.571195+00:00 app[web.1]: I, [2021-05-31T06:15:31.571067 #4] INFO -- : [3adfd6f0-58b9-47c3-ab04-017161a56e18] Started GET "/auth/failure?message=400+Bad+Request&strategy=twitter" for 46.152.103.96 at 2021-05-31 06:15:31 +0000
2021-05-31T06:15:31.572790+00:00 app[web.1]: F, [2021-05-31T06:15:31.572717 #4] FATAL -- : [3adfd6f0-58b9-47c3-ab04-017161a56e18]
2021-05-31T06:15:31.572791+00:00 app[web.1]: [3adfd6f0-58b9-47c3-ab04-017161a56e18] ActionController::RoutingError (No route matches [GET] "/auth/failure"):
2021-05-31T06:15:31.572792+00:00 app[web.1]: [3adfd6f0-58b9-47c3-ab04-017161a56e18]
Thank you: )

Answer 1

I found the solution.
It just was copying master.key and replace it as it says below!
heroku config:set RAILS_MASTER_KEY="copy and paste here config/master.key "
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