Raspbian buster sound problem

Hello
I stuck on Gmoccapy(3.0.8) sound alerts.
Linuxcnc compiled from 2.8 branch on Raspbian Buster.
Gmoccapy code cannot import gst module ( not found).
All needed packages I installed ( I think so).
Does anybody have the same problem
and can help solve this.

Hello again.
I found solution by myself.
Gmoccapy 3.0.8 don't work with python-gst-1.0.
Raspbian buster have no package python-gst0.10.
I built it myself from 'stretch' source package.
After install Gmoccapy sound works.

So claims ( in some forums ) that Gmoccapy should work with gstreamer 1.0 are not true.
At least without code modification.