I have tried manually clearing and setting the buildpack for my Rails app to heroku/rails. I have verified that I have a Gemfile, and I still get this error
remote: -----> Using set buildpack heroku/ruby
remote:
remote: ! Push rejected, failed to detect set buildpack heroku/ruby
remote: More info: https://devcenter.heroku.com/articles/buildpacks#detection-failure
remote:
remote: Verifying deploy...
remote:
remote: ! Push rejected
Which is confusing since I set the buildpack but then it can't detect it. Some of my routes are rendering json as I wanted this app to serve as a backend API. Do I need to add a buildpack for Node? Any other suggestions?