'git push heroku master error: Repository not found

I just tried pushing to heroku from github and this happened, anyone know how to fix this?

$ git push heroku master
ERROR: Repository not found.
fatal: The remote end hung up unexpectedly


Solution 1:[1]

When I encountered this issue I just deleted this line of code from the .git/config file then I tried repushing to heroku(git push heroku master).

[remote "heroku"]
    url = https://git.heroku.com/dry-bastion-47289.git
    fetch = +refs/heads/*:refs/remotes/heroku/*

Solution 2:[2]

For the easy solution remove the existing heroku git repo and recreate it.

git remote rm heroku

and then recreate it

heroku create

and later if you want to rename

heroku rename <name of your app>

Solution 3:[3]

Replaced the Heroku generated app name with our app name in the [remote "heroku"] section of the config file

[remote "heroku"]
    url = https://git.heroku.com/[your_app_name].git
    fetch = +refs/heads/*:refs/remotes/heroku/*

Sources

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Source: Stack Overflow

Solution Source
Solution 1
Solution 2 Abdul Basit
Solution 3 Rich