Thread 1 "kstars" received signal SIGFPE, Arithmetic exception.
0x0000555555dd8c75 in FITSHistogram::constructHistogram<unsigned char> (
    this=this@entry=0x55555dbc0f10) at /usr/include/qt5/QtCore/qarraydata.h:211
211         iterator begin(iterator = iterator()) { return data(); }
(gdb) bt
#0  0x0000555555dd8c75 in FITSHistogram::constructHistogram<unsigned char>()
    (this=this@entry=0x55555dbc0f10)
    at /usr/include/qt5/QtCore/qarraydata.h:211
#1  0x0000555555ddf41c in FITSHistogram::constructHistogram()
    (this=0x55555dbc0f10)
    at /usr/src/packages/BUILD/kstars/kstars/fitsviewer/fitshistogram.cpp:145
#2  0x0000555555976383 in FITSTab::evaluateStats() (this=0x55555db90f10)
    at /usr/include/c++/9/bits/atomic_base.h:413
#3  0x0000555555977e47 in FITSTab::<lambda()>::operator()
    (__closure=0x55555dc59f80)
    at /usr/src/packages/BUILD/kstars/kstars/fitsviewer/fitstab.cpp:184
#4  0x0000555555977e47 in QtPrivate::FunctorCall<QtPrivate::IndexesList<>, QtPrivate::List<>, void, FITSTab::loadFITS(const QUrl&, FITSMode, FITSScale, bool)::<lambda()> >::call (arg=<optimized out>, f=...)
    at /usr/include/qt5/QtCore/qobjectdefs_impl.h:146
#5  0x0000555555977e47 in QtPrivate::Functor<FITSTab::loadFITS(const QUrl&, FITSMode, FITSScale, bool)::<lambda()>, 0>::call<QtPrivate::List<>, void>
    (arg=<optimized out>, f=...)
    at /usr/include/qt5/QtCore/qobjectdefs_impl.h:256
#6  0x0000555555977e47 in QtPrivate::QFunctorSlotObject<FITSTab::loadFITS(const QUrl&, FITSMode, FITSScale, bool)::<lambda()>, 0, QtPrivate::List<>, void>::impl(int, QtPrivate::QSlotObjectBase *, QObject *, void **, bool *)
    (which=<optimized out>, this_=0x55555dc59f70, r=<optimized out>, a=<optimize--Type <RET> for more, q to quit, c to continue without paging--
d out>, ret=<optimized out>) at /usr/include/qt5/QtCore/qobjectdefs_impl.h:439
#7  0x00007ffff59f8638 in QMetaObject::activate(QObject*, int, int, void**) ()
    at /usr/lib64/libQt5Core.so.5
#8  0x000055555583184c in FITSView::loadInFrame() (this=0x55555d87bc70)
    at /usr/src/packages/BUILD/kstars/kstars/fitsviewer/fitsview.cpp:425
#9  0x00007ffff59f8638 in QMetaObject::activate(QObject*, int, int, void**) ()
    at /usr/lib64/libQt5Core.so.5
#10 0x00007ffff580f285 in QFutureWatcherBase::event(QEvent*) ()
    at /usr/lib64/libQt5Core.so.5
#11 0x00007ffff6512c62 in QApplicationPrivate::notify_helper(QObject*, QEvent*)
    () at /usr/lib64/libQt5Widgets.so.5
#12 0x00007ffff651c1e0 in QApplication::notify(QObject*, QEvent*) ()
    at /usr/lib64/libQt5Widgets.so.5
#13 0x00007ffff59cd572 in QCoreApplication::notifyInternal2(QObject*, QEvent*)
    () at /usr/lib64/libQt5Core.so.5
#14 0x00007ffff59d0208 in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () at /usr/lib64/libQt5Core.so.5
#15 0x00007ffff5a24343 in  () at /usr/lib64/libQt5Core.so.5
#16 0x00007ffff33e06b3 in g_main_context_dispatch ()
    at /usr/lib64/libglib-2.0.so.0
#17 0x00007ffff33e2460 in  () at /usr/lib64/libglib-2.0.so.0
#18 0x00007ffff33e249f in g_main_context_iteration ()
    at /usr/lib64/libglib-2.0.so.0
#19 0x00007ffff5a23981 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#20 0x00007ffff59cc0db in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#21 0x00007ffff59d3d42 in QCoreApplication::exec() ()
    at /usr/lib64/libQt5Core.so.5
#22 0x000055555569a45e in main(int, char**)
    (argc=<optimized out>, argv=<optimized out>)
    at /usr/src/packages/BUILD/kstars/kstars/main.cpp:331