There is a error in sys-gui-gpu config file. Line 14:
It says:
dummy-psu-dom0:
pkg.installed:
https://github.com/QubesOS/qubes-mgmt-salt-dom0-virtual-machines/blob/master/qvm/sys-gui-gpu.sls
When you look at this file sys-gui: Line 13
dummy-psu-sender:
pkg.installed:
https://github.com/QubesOS/qubes-mgmt-salt-dom0-virtual-machines/blob/master/qvm/sys-gui.sls
So you need to change your sys-gui-gpu SLS file.
This file you can found at this location:
/srv/formulas/base/virtual-machines-formula/qvm/default/sys-gui-gpu.sls
After you change this config file and compile your new VM, you will receive new error:
file or directory qubes-input-trigger not found.
I am waiting here for progress.