Debian 11 Bullseye segfaults QTPlasmac

2021-11-13 18:46:22,725 - QTvcp - INFO - Logging to "/home/fab1/qtvcp.log"
2021-11-13 18:46:22,764 - QTvcp.QTVCP.QT_ISTAT - WARNING - INI Parsing Error, No PROGRAM_PREFIX Entry in DISPLAY, Using: ~/linuxcnc/nc_files
2021-11-13 18:46:22,766 - QTvcp.QTVCP.QT_ISTAT - WARNING - INI Parsing Error, No MIN_LINEAR_VELOCITY Entry in DISPLAY, Using: 1
2021-11-13 18:46:23,171 - QTvcp.QTVCP.QT_PSTAT - INFO - Using DEFAULT handler file path: /usr/share/qtvcp/panels/qtplasmac_sim/qtplasmac_sim_handler.py
2021-11-13 18:46:23,171 - QTvcp.QTVCP.QT_PSTAT - INFO - Using DEFAULT ui file from /usr/share/qtvcp/panels/qtplasmac_sim/qtplasmac_sim.ui
2021-11-13 18:46:23,171 - QTvcp.QTVCP.QT_PSTAT - INFO - Using LOCAL qss file from /home/fab1/linuxcnc/configs/by_machine.qtplasmac/qtplasmac_sim.qss
2021-11-13 18:46:23,171 - QTvcp.QTVCP.QT_PSTAT - INFO - No qrc file found
2021-11-13 18:46:23,171 - QTvcp.QTVCP.QT_PSTAT - INFO - No resources.py file found, No QRC file to compile one from.
2021-11-13 18:46:23,172 - QTvcp.QTVCP.QT_PSTAT - INFO - Using no translations. Default system locale is: en
2021-11-13 18:46:23,172 - QTvcp - INFO - Building A VCP Panel with Python 3
2021-11-13 18:46:23,172 - QTvcp - INFO - No handler file specified - using /usr/share/qtvcp/panels/qtplasmac_sim/qtplasmac_sim_handler.py
2021-11-13 18:46:23,173 - QTvcp - INFO - No HAL component base name specified - using: qtplasmac_sim
2021-11-13 18:46:23,173 - QTvcp.QTVCP.QT_MAKEGUI - INFO - Qsettings file path: /home/fab1/.config/QtVcp/qtplasmac_sim.conf
2021-11-13 18:46:23,179 - QTvcp.QTVCP.QT_MAKEGUI - INFO - No resource file to load: None
2021-11-13 18:46:23,260 - QTvcp - INFO - Preference path: /home/fab1/linuxcnc/configs/by_machine.qtplasmac/qtplasmac.prefs
2021-11-13 18:46:23,262 - QTvcp.QTVCP.QT_MAKEPINS - INFO - No preference file - can not set preference geometry.
2021-11-13 18:46:23,276 - QTvcp - INFO - Preference path: None