Windows Server 20016 Unable to run NodeJS App

[manuelpoelzl]

I've installed my NodeJS express app via the plesk control panel, and whenever i try to browse my domain i get the following error:
.

The part where it says iisnode makes me think that this has something to do with the iis itself.
I already checked if there are some port conflicts since this can also cause this problem, but express either takes the environment port or specifies port 3000 (which is free).

I also read several articles which mentioned that this could occur because the static file content feature is not installed/enabled on the server, but it is enabled on my machine, so this isn't the problem.

It would be great if someone could point me to the right direction.