Yes, maybe that “goes without saying”, but my approach is to focus on the things I want to achieve first and then do the other stuff. In this case it was the wrong approach for sure.
I admit this is on me and I am sorry for causing this, but I guess it is worth to mention in the instructions in order to avoid. 
Another thing, if you need to update the app in the future, maybe add an error message if such root folder does not exist?
