Connect to Vault on NAS from Chromebook gets error EINVAL

What I’m trying to do

I want to host my vault on my Qnap NAS drive and connect to it from my Chromebook. However when I try to connect I get an “error: EINVAL: invalid argument, scandir”

Things I have tried

I have looked at different ways to mount my NAS. I’ve shared that folder with Linux. I’ve tried installing both the Flatpak and Appimage versions of Obsidian.

I can connect to the vault from my PC and via Qsync on my Android phone.

I’m wondering whether a Symlink might help but can’t seem to get that to work correctly. Any ideas very welcome!