Looks like the fault is around:
#6 0x00007ffe68b27aca in QPlatformScreen::physicalSize() const () from /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
Looks like the fault is around:
#6 0x00007ffe68b27aca in QPlatformScreen ::physicalSize( ) const () from /usr/lib/ x86_64- linux-gnu/ libQt5Gui. so.5