See my build in OBS
https://build.opensuse.org/build/home:glusterfs:Tumbleweed-nfs-ganesha-2.5/openSUSE_Tumbleweed/x86_64/NFS-Ganesha-2.5.4/_log

python3-qt4-devel (including python3-qt4) isn't installed. In fact no python3
of any kind is installed.

So attempting to run /usr/bin/pyuic4 not surprisingly fails.

...
[  278s] cd
/home/abuild/rpmbuild/BUILD/nfs-ganesha-2.5.4/src/build/scripts/ganeshactl &&
/usr/bin/pyuic4
/home/abuild/rpmbuild/BUILD/nfs-ganesha-2.5.4/src/scripts/ganeshactl/Ganesha/QtUI/ui_main_window.ui
-o build/lib/Ganesha/QtUI/ui_main_window.py
[  278s] /usr/bin/python3: can't open file
'/usr/lib64/python3.6/site-packages/PyQt4/uic/pyuic.py': [Errno 2] No such file
or directory
...