Thread 1 "KillDiskIndustr" received signal SIGSEGV, Segmentation fault.
0x00007ffff64ae040 in QScreen::handle() const () from ./lib/libQt5Gui.so.5
(gdb) where
#0  0x00007ffff64ae040 in QScreen::handle() const () from ./lib/libQt5Gui.so.5
#1  0x00007ffff7fe78b6 in ?? ()
   from /usr/lib/x86_64-linux-gnu/qt5/plugins/xcbglintegrations/libqxcb-glx-integration.so
#2  0x00007fffebb7b4b2 in QXcbIntegration::createPlatformWindow(QWindow*) const ()
   from ./lib/libQt5XcbQpa.so.5
#3  0x00007ffff648f5dd in QWindowPrivate::create(bool) () from ./lib/libQt5Gui.so.5
#4  0x00007ffff6d14893 in QWidgetPrivate::create_sys(unsigned long long, bool, bool) ()
   from ./lib/libQt5Widgets.so.5
#5  0x00007ffff6d14019 in QWidget::create(unsigned long long, bool, bool) ()
   from ./lib/libQt5Widgets.so.5
#6  0x00007ffff6d1fea2 in QWidget::setVisible(bool) () from ./lib/libQt5Widgets.so.5
#7  0x00007ffff6ed5a83 in QDialog::setVisible(bool) () from ./lib/libQt5Widgets.so.5
#8  0x00007ffff6ed5521 in QDialog::exec() () from ./lib/libQt5Widgets.so.5
#9  0x00000000008bf077 in WelcomeDlg::showDialog (parent=0x0)