Mv - command not found

Since a re-jailbreak, some of my Siri Shortcuts to do with moving regex [A-Z] folders have started not working properly.

Simple `mv` commands came back with the error: "permissions denied: command not found."

I didn't really know what to make of "permissions denied" either but I chmoded all folders I am using for good measure.
Then I received "command not found" even when the folder in question was still successfully moved to the desired location properly. Why the error message then? Strange.

I thought an uninstall – reinstall would be in order but I don't want to lose my preferences in A-Shell.
For now, I have changed to local SSH mv actions, but I liked A-Shell doing the moving before better (they also work without a JB).

Have you heard about such behaviour before?

Cheers