With Getting debugging symbols to guide me, on Kubuntu 26.04:
root@mowa219-gjp4 ~# apt install python3-dbg python3-pyqt5-dbg python3-pyqt5.qtwebengine-dbg libqt5webengine5-dbgsym libqt5webenginecore5-dbgsym
Error: Unable to locate package python3-pyqt5-dbg
Error: Unable to locate package python3-pyqt5.qtwebengine-dbg
Error: Couldn't find any package by glob 'python3-pyqt5.qtwebengine-dbg'
Error: Unable to locate package libqt5webengine5-dbgsym
Error: Unable to locate package libqt5webenginecore5-dbgsym
root@mowa219-gjp4 ~ [100]# apt install python3-dbg python3-pyqt5-dbg python3-pyqt5.qtwebkit-dbg libqt5webkit5-dbg
Error: Unable to locate package python3-pyqt5-dbg
Error: Unable to locate package python3-pyqt5.qtwebkit-dbg
Error: Couldn't find any package by glob 'python3-pyqt5.qtwebkit-dbg'
Error: Unable to locate package libqt5webkit5-dbg
root@mowa219-gjp4 ~ [100]#
With Getting debugging symbols to guide me, on Kubuntu 26.04: