This is the trace:
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[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib64/libthread_db.so.1".
[New Thread 0x7fffe24a66c0 (LWP 1796888)]
[New Thread 0x7fffe1ca56c0 (LWP 1796889)]
[New Thread 0x7fffdbe6f6c0 (LWP 1796891)]
[New Thread 0x7fffdb66e6c0 (LWP 1796892)]
[New Thread 0x7fffdadea6c0 (LWP 1796893)]
[Thread 0x7fffdadea6c0 (LWP 1796893) exited]
[New Thread 0x7fffc7fff6c0 (LWP 1796895)]
[New Thread 0x7fffc5ffe6c0 (LWP 1796896)]
[New Thread 0x7fffc3ffd6c0 (LWP 1796897)]
[New Thread 0x7fffbbfff6c0 (LWP 1796898)]
[New Thread 0x7fffdadea6c0 (LWP 1796899)]
[New Thread 0x7fffc1ffc6c0 (LWP 1796900)]
[New Thread 0x7fffc17fb6c0 (LWP 1796901)]
[New Thread 0x7fffc0ffa6c0 (LWP 1796902)]
[New Thread 0x7fffb9ffe6c0 (LWP 1796903)]
[New Thread 0x7fffb97fd6c0 (LWP 1796904)]
[New Thread 0x7fffb8ffc6c0 (LWP 1796905)]
[Thread 0x7fffb97fd6c0 (LWP 1796904) exited]
[Thread 0x7fffc1ffc6c0 (LWP 1796900) exited]
[Thread 0x7fffb9ffe6c0 (LWP 1796903) exited]
[Thread 0x7fffb8ffc6c0 (LWP 1796905) exited]
[Thread 0x7fffc0ffa6c0 (LWP 1796902) exited]
[Detaching after fork from child process 1797713]
[Detaching after fork from child process 1797714]
[Detaching after fork from child process 1797715]
[New Thread 0x7fffc0ffa6c0 (LWP 1797718)]
[New Thread 0x7fffb8ffc6c0 (LWP 1797728)]
[New Thread 0x7fffb9ffe6c0 (LWP 1797729)]
[New Thread 0x7fffc1ffc6c0 (LWP 1797730)]
[New Thread 0x7fffa73ff6c0 (LWP 1797731)]
[New Thread 0x7fffa6bfe6c0 (LWP 1797732)]
[New Thread 0x7fffa63fd6c0 (LWP 1797733)]
[New Thread 0x7fffa5bfc6c0 (LWP 1797734)]
[New Thread 0x7fffa53fb6c0 (LWP 1797735)]
[New Thread 0x7fffa4bfa6c0 (LWP 1797736)]
[New Thread 0x7fff77fff6c0 (LWP 1797737)]
[New Thread 0x7fff76fbe6c0 (LWP 1797739)]
Thread 1 "kstars" received signal SIGSEGV, Segmentation fault.
0x0000555555b27c33 in ISD::CameraChip::getISOList() const ()
#0 0x0000555555b27c33 in ISD::CameraChip::getISOList() const ()
#1 0x0000555555ccda04 in Ekos::SequenceJob::setISO(int) ()
#2 0x0000555555c71be4 in Ekos::Capture::updateJobFromUI(Ekos::SequenceJob*, Ekos::Capture::FilenamePreviewType) ()
#3 0x0000555555c85324 in Ekos::Capture::createJob(Ekos::SequenceJob::SequenceJobType, Ekos::Capture::FilenamePreviewType) ()
#4 0x0000555555c854be in QtPrivate::QFunctorSlotObject<Ekos::Capture::Capture()::{lambda(Ekos::SequenceJob::SequenceJobType)#35}, 1, QtPrivate::List<Ekos::SequenceJob::SequenceJobType>, void>::impl(int, QtPrivate::QSlotObjectBase*, QObject*, void**, bool*) ()
#5 0x00007ffff4cd0e16 in void doActivate<false>(QObject*, int, void**) () at /lib64/libQt5Core.so.5
#6 0x0000555555a48c85 in Ekos::CaptureProcess::createJob(Ekos::SequenceJob::SequenceJobType) ()
#7 0x0000555555c65b3f in Ekos::Capture::capturePreview() ()
#8 0x00007ffff4cd0e16 in void doActivate<false>(QObject*, int, void**) () at /lib64/libQt5Core.so.5
#9 0x00007ffff5aa3566 in QAbstractButton::clicked(bool) () at /lib64/libQt5Widgets.so.5
#10 0x00007ffff5aa37de in QAbstractButtonPrivate::emitClicked() () at /lib64/libQt5Widgets.so.5
#11 0x00007ffff5aa541c in QAbstractButtonPrivate::click() () at /lib64/libQt5Widgets.so.5
#12 0x00007ffff5aa563b in QAbstractButton::mouseReleaseEvent(QMouseEvent*) () at /lib64/libQt5Widgets.so.5
#13 0x00007ffff59f1948 in QWidget::event(QEvent*) () at /lib64/libQt5Widgets.so.5
#14 0x00007ffff59aed72 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /lib64/libQt5Widgets.so.5
#15 0x00007ffff59b73e2 in QApplication::notify(QObject*, QEvent*) () at /lib64/libQt5Widgets.so.5
#16 0x00007ffff4c9da58 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /lib64/libQt5Core.so.5
#17 0x00007ffff59b54e2 in QApplicationPrivate::sendMouseEvent(QWidget*, QMouseEvent*, QWidget*, QWidget*, QWidget**, QPointer<QWidget>&, bool, bool) () at /lib64/libQt5Widgets.so.5
#18 0x00007ffff5a0acb2 in QWidgetWindow::handleMouseEvent(QMouseEvent*) () at /lib64/libQt5Widgets.so.5
#19 0x00007ffff5a0e180 in QWidgetWindow::event(QEvent*) () at /lib64/libQt5Widgets.so.5
#20 0x00007ffff59aed72 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /lib64/libQt5Widgets.so.5
#21 0x00007ffff4c9da58 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /lib64/libQt5Core.so.5
#22 0x00007ffff516b5ed in QGuiApplicationPrivate::processMouseEvent(QWindowSystemInterfacePrivate::MouseEvent*) () at /lib64/libQt5Gui.so.5
#23 0x00007ffff514a28c in QWindowSystemInterface::sendWindowSystemEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Gui.so.5
#24 0x00007fffe2517bde in xcbSourceDispatch(_GSource*, int (*)(void*), void*) () at /lib64/libQt5XcbQpa.so.5
#25 0x00007ffff3b7bc7f in g_main_context_dispatch () at /lib64/libglib-2.0.so.0
#26 0x00007ffff3bd2178 in g_main_context_iterate.constprop () at /lib64/libglib-2.0.so.0
#27 0x00007ffff3b78f00 in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#28 0x00007ffff4cee56a in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#29 0x00007ffff4c9c4aa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#30 0x00007ffff4ca4572 in QCoreApplication::exec() () at /lib64/libQt5Core.so.5
#31 0x0000555555701f23 in main ()