In Makefile.auto.win there will be the full exit reason.
When you exit Erlang/Elixir the full slogan is printed to stdout and then a truncated slogan is printed to stderr. Since argon seems to do a redirect to Makefile.auto.win of the output of stdout the error reason will be put in that file. Then when you the next time try to run that Makefile, you actually try to run the error which will not work.
So check what text is in the Makefile and fix whatever that problem is 
