heroku push error: “Could not detect rake tasks”

Question

I\'m trying to deploy a basic app and it\'s not working. Using

git push heroku master 

I got this error message:

remote:          


        

Answer 1

I'd been getting both

Could not detect rake tasks

and

LoadError: cannot load such file

Turns out I'd got case wrong on a require statment - works fine on Windows (case insensitive filesystem) but fails on Heroku with those errors (quite mis-leading when looking at the 'Could not detect rake tasks')