Is lirc installed? How current are the directions you are following, I don't think modprobe is used anymore, maybe systemctl now?The new lirc is less than a year old and the internet is full of 20 year old tutorials that no longer work. And the tuts at lirc.org are not totally correct.
that node error sounds familiar, I can't recall what fixed it. I was fighting with making the GPIO receiver work with Kodi in Raspbian. Gave up.
I think " systemctl start lircd" is the command, or something like that..
I'm sorry but there is a lot of miss information here.
Yes, lirc comes with LibreELEC.
Modprobe is still used however I would put the module name in a file called
/storage/.config/modules-load.d/nuvoton-ir.conf
Instead of using autostart.sh
Systemctl start lircd won't work. We activate lircd via udev.