Hi,
I had downloaded the source file from sourceforge.
Did :
sudo git clone git://git.code.sf.net/p/dxf2gcode/sourcecode dxf2gcode-sourcecode
then go to the source folder and try to run the dxf2gcode with
sudo python3 ./make_tr.py
sudo python3 ./make_py_uic.py
sudo python3 ./st-setup.py build...