I was having problems with this exact line of code from the Distillery docs. I am pretty sure that Application.get_application doesn’t work at runtime in Distillery releases when you actually deploy them.
What I did is just hard-code my OTP app name like :myapp into the myapp function like so:
def myapp, do: :myapp
Besides the above, I don’t think your version is working since Application.get_application/1 takes in a module name. Something like MyApp.Foo. You can see this here: Application — Elixir v1.20.2.
