I recently updating a website where many gems had deprecated (I was using a heroku gem, for example). I'm at the final step of updating my localfiles to the production server.
When I run 'git push heroku master' I get this error:
Failed to install gems via Bundler
Push rejected, failed to compile Ruby app.
Push failed
...
! [remote rejected] master -> master (pre-receive hook declined)
Any advice is welcome. Once again - I had to update Ruby/Rails/Heroku, so I'm sure there could be some odd compatibility issue that I'm not seeing. However I've got it all to work locally, and would expect it to work on Heroku.