Failed to deploy Heroku - heroku

Question

I cannot deploy my app on Heroku as this is the error that I am getting;
I used this website to deploy my app to Heroku => https://betterprogramming.pub/deploy-your-app-for-free-in-7-easy-steps-thanks-to-heroku-dfd0f387edd0
Got this message;
remote: -----> Building on the Heroku-20 stack
remote: -----> Using buildpack: heroku/nodejs
remote: -----> App not compatible with buildpack: https://buildpack-registry.s3.amazonaws.com/buildpacks/heroku/nodejs.tgz
remote:
remote: ! ERROR: Application not supported by 'heroku/nodejs' buildpack
remote: !
remote: ! The 'heroku/nodejs' buildpack is set on this application, but was
remote: ! unable to detect a Node.js codebase.
remote: !
remote: ! A Node.js app on Heroku requires a 'package.json' at the root of
remote: ! the directory structure.
remote: !
remote: ! If you are trying to deploy a Node.js application, ensure that this
remote: ! file is present at the top level directory. This directory has the
remote: ! following files:
remote: !
remote: ! client/
remote: ! Procfile
remote: ! README.md
remote: ! smart_contract/
remote: !
remote: ! If you are trying to deploy an application written in another
remote: ! language, you need to change the list of buildpacks set on your
remote: ! Heroku app using the 'heroku buildpacks' command.
remote: !
remote: ! For more information, refer to the following documentation:
remote: ! https://devcenter.heroku.com/articles/buildpacks
remote: ! https://devcenter.heroku.com/articles/nodejs-support#activation
remote:
remote:
remote: More info: https://devcenter.heroku.com/articles/buildpacks#detection-failure
remote:
remote: ! Push failed
remote: Verifying deploy...
remote:
remote: ! Push rejected to arcane-springs-89425.
remote:
To https://git.heroku.com/arcane-springs-89425.git
The code “git push heroku master” fails for the push-and-deploy process. I haven’t been given an URL where I could see my app.
Steps I took ;
change the buildpack to node.js (I'm using blockchain, stability, metamask)
git add Procfile
git commit -a -m "Configuration to deploy to heroku"
git push heroku master
The website https://git.heroku.com/arcane-springs-89425.git says "Method Not Allowed" in on a blank page.