Author: Unknown
Subject: bad interpreter: No such file or directory
Date: Thursday, 22 Oct 2020, 22:48:29

I had the same issue. It's because Windows (and maybe Mac) use different line endings from Linux. If you're using Sublime, you can go to 

View>Line Endings>Unix

to fix it. Otherwise, open it up in vim on a terminal with

vi mcBash
:set fileformat=unix
:wq

where the last line is to save and quit. Hope it helps!