segfault

[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[New Thread 0x7ffff3d5b700 (LWP 23475)]
[New Thread 0x7ffff1d9e700 (LWP 23476)]
[New Thread 0x7ffff0e51700 (LWP 23477)]
[New Thread 0x7fffe9ffd700 (LWP 23478)]
[New Thread 0x7fffe3e1e700 (LWP 23479)]
[New Thread 0x7fffe361d700 (LWP 23480)]
[New Thread 0x7fffe2e1c700 (LWP 23481)]
[New Thread 0x7fffe261b700 (LWP 23482)]
[New Thread 0x7fffe1e1a700 (LWP 23483)]
[New Thread 0x7fffe1619700 (LWP 23484)]
[New Thread 0x7fffe0e18700 (LWP 23485)]
[New Thread 0x7fffa7fff700 (LWP 23486)]
[New Thread 0x7fff77fff700 (LWP 23492)]
[New Thread 0x7fff659ad700 (LWP 23493)]
[New Thread 0x7fff651ac700 (LWP 23494)]
[New Thread 0x7fff5ffff700 (LWP 23495)]
[New Thread 0x7fff5f7fe700 (LWP 23496)]
[New Thread 0x7fff5effd700 (LWP 23497)]
[New Thread 0x7fff5e7fc700 (LWP 23498)]
[New Thread 0x7fff5dffb700 (LWP 23499)]
[New Thread 0x7fff5d7fa700 (LWP 23500)]
[New Thread 0x7fff5cff9700 (LWP 23501)]
[Thread 0x7fff659ad700 (LWP 23493) exited]
[New Thread 0x7fff3bfff700 (LWP 23502)]
[Thread 0x7fff77fff700 (LWP 23492) exited]
[New Thread 0x7fff3b7fe700 (LWP 23503)]
[New Thread 0x7fffe9013700 (LWP 23504)]
[Thread 0x7fff5ffff700 (LWP 23495) exited]
[Thread 0x7fff5effd700 (LWP 23497) exited]

Thread 1 "veil-qt" received signal SIGSEGV, Segmentation fault.
0x0000555556558a5a in QEventLoop::exit(int) ()
(gdb) backtrace
#0  0x0000555556558a5a in QEventLoop::exit(int) ()
#1  0x0000555556a0baed in QDialog::setVisible(bool) ()
#2  0x0000555556a0a10e in QDialog::done(int) ()
#3  0x0000555555807ebb in UnlockPasswordDialog::onUnlockClicked() ()
#4  0x000055555658d5d1 in QMetaObject::activate(QObject*, int, int, void**) ()
#5  0x0000555556950241 in QAbstractButtonPrivate::emitClicked() ()
#6  0x00005555569516aa in QAbstractButtonPrivate::click() ()
#7  0x000055555695189d in QAbstractButton::mouseReleaseEvent(QMouseEvent*) ()
#8  0x00005555568d4ef8 in QWidget::event(QEvent*) ()
#9  0x000055555689e5fc in QApplicationPrivate::notify_helper(QObject*, QEvent*)
    ()
#10 0x00005555568a61c7 in QApplication::notify(QObject*, QEvent*) ()
#11 0x000055555655afe8 in QCoreApplication::notifyInternal2(QObject*, QEvent*)
    ()
#12 0x00005555568a50e2 in QApplicationPrivate::sendMouseEvent(QWidget*, QMouseEvent*, QWidget*, QWidget*, QWidget**, QPointer<QWidget>&, bool) ()
#13 0x00005555568ee02b in QWidgetWindow::handleMouseEvent(QMouseEvent*) ()
#14 0x00005555568f069a in QWidgetWindow::event(QEvent*) ()
#15 0x000055555689e5fc in QApplicationPrivate::notify_helper(QObject*, QEvent*)
    ()
#16 0x00005555568a5c4f in QApplication::notify(QObject*, QEvent*) ()
#17 0x000055555655afe8 in QCoreApplication::notifyInternal2(QObject*, QEvent*)
    ()
---Type <return> to continue, or q <return> to quit---
#18 0x00005555560998bb in QGuiApplicationPrivate::processMouseEvent(QWindowSystemInterfacePrivate::MouseEvent*) ()
#19 0x000055555609b415 in QGuiApplicationPrivate::processWindowSystemEvent(QWindowSystemInterfacePrivate::WindowSystemEvent*) ()
#20 0x000055555606e694 in QWindowSystemInterface::sendWindowSystemEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
#21 0x000055555605efd6 in QUnixEventDispatcherQPA::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
#22 0x0000555556558dcf in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) ()
#23 0x00005555565629f8 in QCoreApplication::exec() ()
#24 0x000055555572b5eb in main ()