One gotcha I tripped on was that the first dat-shared-files shares a file it runs fs.existsSync ... and one way this check it using a try/ catch block which if you have the debugger open and set to halt on throws ... then it snags there. I panicked for a moment but turns out it was totally fine.

You can help : please confirm that you can see that DAT file I just posted (in Beaker Browser for the moment I guess)