What is the reason for “Procfile declares types -> (none)” in Heroku?

Question

I am trying to deploy a test app to Heroku --stack cedar but every time I do my Procfile is being ignored.

It should be saying this:

Procfile declare         


        

Answer 1

I'm adding to Pascal Lindelauf answer - make sure your file name is "Procfile" (with a capital P) and not "procfile" (that was the case with me just now) good luck!