Sometimes, you have to fix at the Heroku CLI for like this situation.
(I met this after I had added
$ heroku login heroku: Press any key to open up the browser to login or q to exit: Opening browser to https://cli-auth.heroku.com/auth/cli/browser/xxxx Logging in... done Logged in as email@example.com
Make sure which app you want to manipulate.
$ heroku apps === xxxxxxxxx Apps aaaaa bbbbb ccccc
$ heroku logs -a [app_name] $ heroku logs --tail -a [app_name] $ heroku run rails c
$ heroku run rake db:version -a [app_name] $ heroku run rake db:version -a eventer-prototype