So the ENV setup following my steps are working?
From my experience the name of the xsa dont matter as it will rename it if it is unique on the folder.
PREBUILT=/media/sf_ZC706_shared/focal.arm.2.7.0_2021_11_17.tar.gz
For this don’t put this is the sharing folder right might lead to issue as well.
Move to location home and rerun again.
$(BUILD_ROOT)/PYNQ/build.sh remove line started @105 to 165
to reduce the build of other unnecessary board and licensing issue.
Try make with the same setting without clean and ensure remove these lines.
Usually check ps -a and ensure there are no background vivado is running.