Imported functions from folder not running (repl.it)

Question

What title says. Even the AI acknowledges that I supposedly have the imports formatted properly but doesn't know what the error is and says to "check elsewhere" in the code.

main.py defs.py

Thanks in advance.

I've looked up multiple Reddit and StackOverflow discussions on this and they all say to use star import. Some say to init to turn them into packages but I want to know the best way to get these functions (like getACode) to run from a star import of the Investigations folder.