Installing QtVCP

This error "ImportError: No module named PyQt5" indicates the the script didn't run correctly.

What version of LinuxCNC are you using?

Base directory means the name of the sub directory in your home directory that you have install a run in place version of LinuxCNC, that is usually linuxcnc-dev.

If you are using LinuxCNC 2.8 then there is an udated script, I have attached a copy here.
 

EDIT: I have update the first page to add the 2.8 script download.
 

Thanks - yes I'm on 2.8, so will run the updated script. 

Many thanks!

Well that was lightning quick but it's still complaining about various missing python-pyqt5 content. Do I need to point it at some additional stuff?

Here's the terminal text attached.
 

What Linux disto are you using?

Mint 20 - and LinuxCNC 2.8:
System:    Kernel: 5.10.0-8-rt-amd64 x86_64 bits: 64 compiler: N/A Desktop: Cinnamon 5.0.5 
           wm: muffin dm: LightDM Distro: Linux Mint 20.2 Uma base: Ubuntu 20.04 focal 

have no clue ...

Is Qt5 installed?

Is python2.x installed?

Try runnining Synaptic and see if python-pyqt5 can be installed from there of if it gives a better message.