SUMMARY
I clicked "Applications" > "Office",
I ckiked on a listed app to open its description page.
So I clicked on another app and discover crashed.

Operating System: KDE neon Unstable Edition
KDE Plasma Version: 5.16.80
KDE Frameworks Version: 5.62.0
Qt Version: 5.12.3

Application: Discover (plasma-discover), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7fdba19e6e00 (LWP 14932))]

Thread 15 (Thread 0x7fdb4c900700 (LWP 16822)):
#0  __libc_disable_asynccancel () at ../sysdeps/unix/sysv/linux/x86_64/cancellation.S:91
#1  0x00007fdb9c6150c9 in __GI___libc_read (fd=31, buf=buf@entry=0x7fdb4c8ffa50, nbytes=nbytes@entry=16) at ../sysdeps/unix/sysv/linux/read.c:27
#2  0x00007fdb96b102d0 in read (__nbytes=16, __buf=0x7fdb4c8ffa50, __fd=<optimized out>) at /usr/include/x86_64-linux-gnu/bits/unistd.h:44
#3  g_wakeup_acknowledge (wakeup=0x556ec17f7360) at ../../../../glib/gwakeup.c:210
#4  0x00007fdb96acb0b7 in g_main_context_check (context=context@entry=0x7fdaf8002400, max_priority=2147483647, fds=fds@entry=0x7fdaf80050a0, n_fds=n_fds@entry=1) at ../../../../glib/gmain.c:3680
#5  0x00007fdb96acb570 in g_main_context_iterate (context=context@entry=0x7fdaf8002400, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ../../../../glib/gmain.c:3899
#6  0x00007fdb96acb6dc in g_main_context_iteration (context=0x7fdaf8002400, may_block=may_block@entry=1) at ../../../../glib/gmain.c:3963
#7  0x00007fdb9cf5cdcb in QEventDispatcherGlib::processEvents (this=0x7fdaf8000b20, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#8  0x00007fdb9cefe03a in QEventLoop::exec (this=this@entry=0x7fdb4c8ffc60, flags=..., flags@entry=...) at kernel/qeventloop.cpp:225
#9  0x00007fdb9cd254ca in QThread::exec (this=<optimized out>) at thread/qthread.cpp:531
#10 0x00007fdb9cd26c72 in QThreadPrivate::start (arg=0x556ec6c58c90) at thread/qthread_unix.cpp:361
#11 0x00007fdb993ad6db in start_thread (arg=0x7fdb4c900700) at pthread_create.c:463
#12 0x00007fdb9c62688f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 14 (Thread 0x7fdae6ffd700 (LWP 16820)):
#0  g_source_iter_next (iter=iter@entry=0x7fdae6ffcaa0, source=source@entry=0x7fdae6ffca98) at ../../../../glib/gmain.c:983
#1  0x00007fdb96acaa63 in g_main_context_prepare (context=context@entry=0x7fdad80152b0, priority=priority@entry=0x7fdae6ffcb20) at ../../../../glib/gmain.c:3452
#2  0x00007fdb96acb4fb in g_main_context_iterate (context=context@entry=0x7fdad80152b0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ../../../../glib/gmain.c:3882
#3  0x00007fdb96acb6dc in g_main_context_iteration (context=0x7fdad80152b0, may_block=may_block@entry=1) at ../../../../glib/gmain.c:3963
#4  0x00007fdb9cf5cdcb in QEventDispatcherGlib::processEvents (this=0x7fdad92595a0, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#5  0x00007fdb9cefe03a in QEventLoop::exec (this=this@entry=0x7fdae6ffcc60, flags=..., flags@entry=...) at kernel/qeventloop.cpp:225
#6  0x00007fdb9cd254ca in QThread::exec (this=<optimized out>) at thread/qthread.cpp:531
#7  0x00007fdb9cd26c72 in QThreadPrivate::start (arg=0x7fdb58019ec0) at thread/qthread_unix.cpp:361
#8  0x00007fdb993ad6db in start_thread (arg=0x7fdae6ffd700) at pthread_create.c:463
#9  0x00007fdb9c62688f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 13 (Thread 0x7fdb66eac700 (LWP 16819)):
#0  0x00007fdb9c619bf9 in __GI___poll (fds=0x7fdb58abd410, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007fdb96acb5c9 in g_main_context_poll (priority=<optimized out>, n_fds=1, fds=0x7fdb58abd410, timeout=<optimized out>, context=0x7fdb58a97e30) at ../../../../glib/gmain.c:4203
#2  g_main_context_iterate (context=context@entry=0x7fdb58a97e30, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ../../../../glib/gmain.c:3897
#3  0x00007fdb96acb6dc in g_main_context_iteration (context=0x7fdb58a97e30, may_block=may_block@entry=1) at ../../../../glib/gmain.c:3963
#4  0x00007fdb9cf5cdcb in QEventDispatcherGlib::processEvents (this=0x7fdb58b3a5c0, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#5  0x00007fdb9cefe03a in QEventLoop::exec (this=this@entry=0x7fdb66eabbf0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:225
#6  0x00007fdb9cd254ca in QThread::exec (this=this@entry=0x556ec1357580) at thread/qthread.cpp:531
#7  0x00007fdba033e926 in QQuickPixmapReader::run (this=0x556ec1357580) at util/qquickpixmapcache.cpp:953
#8  0x00007fdb9cd26c72 in QThreadPrivate::start (arg=0x556ec1357580) at thread/qthread_unix.cpp:361
#9  0x00007fdb993ad6db in start_thread (arg=0x7fdb66eac700) at pthread_create.c:463
#10 0x00007fdb9c62688f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 12 (Thread 0x7fdb4d101700 (LWP 16779)):
#0  0x00007fdb9c619bf9 in __GI___poll (fds=0x7fdadc00f200, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007fdb96acb5c9 in g_main_context_poll (priority=<optimized out>, n_fds=1, fds=0x7fdadc00f200, timeout=<optimized out>, context=0x7fdadc872520) at ../../../../glib/gmain.c:4203
#2  g_main_context_iterate (context=context@entry=0x7fdadc872520, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ../../../../glib/gmain.c:3897
#3  0x00007fdb96acb6dc in g_main_context_iteration (context=0x7fdadc872520, may_block=may_block@entry=1) at ../../../../glib/gmain.c:3963
#4  0x00007fdb9cf5cdcb in QEventDispatcherGlib::processEvents (this=0x7fdadc03cb40, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#5  0x00007fdb9cefe03a in QEventLoop::exec (this=this@entry=0x7fdb4d100c60, flags=..., flags@entry=...) at kernel/qeventloop.cpp:225
#6  0x00007fdb9cd254ca in QThread::exec (this=<optimized out>) at thread/qthread.cpp:531
#7  0x00007fdb9cd26c72 in QThreadPrivate::start (arg=0x7fdb50addd60) at thread/qthread_unix.cpp:361
#8  0x00007fdb993ad6db in start_thread (arg=0x7fdb4d101700) at pthread_create.c:463
#9  0x00007fdb9c62688f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 11 (Thread 0x7fdb4ffff700 (LWP 16610)):
#0  0x00007fdb9c6150b4 in __GI___libc_read (fd=44, buf=buf@entry=0x7fdb4fffeb90, nbytes=nbytes@entry=16) at ../sysdeps/unix/sysv/linux/read.c:27
#1  0x00007fdb96b102d0 in read (__nbytes=16, __buf=0x7fdb4fffeb90, __fd=<optimized out>) at /usr/include/x86_64-linux-gnu/bits/unistd.h:44
#2  g_wakeup_acknowledge (wakeup=0x7fdb58003710) at ../../../../glib/gwakeup.c:210
#3  0x00007fdb96acb0b7 in g_main_context_check (context=context@entry=0x7fdb580157e0, max_priority=2147483647, fds=fds@entry=0x7fdb580156c0, n_fds=n_fds@entry=1) at ../../../../glib/gmain.c:3680
#4  0x00007fdb96acb570 in g_main_context_iterate (context=0x7fdb580157e0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ../../../../glib/gmain.c:3899
#5  0x00007fdb96acb962 in g_main_loop_run (loop=0x7fdb580158a0) at ../../../../glib/gmain.c:4098
#6  0x00007fdb953ef0e6 in gdbus_shared_thread_func (user_data=0x7fdb58012780) at ../../../../gio/gdbusprivate.c:275
#7  0x00007fdb96af3195 in g_thread_proxy (data=0x7fdb580074a0) at ../../../../glib/gthread.c:784
#8  0x00007fdb993ad6db in start_thread (arg=0x7fdb4ffff700) at pthread_create.c:463
#9  0x00007fdb9c62688f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 10 (Thread 0x7fdb65eaa700 (LWP 14979)):
#0  0x00007fdb993b39f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x556ec31705f0) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  __pthread_cond_wait_common (abstime=0x0, mutex=0x556ec31705a0, cond=0x556ec31705c8) at pthread_cond_wait.c:502
#2  __pthread_cond_wait (cond=0x556ec31705c8, mutex=0x556ec31705a0) at pthread_cond_wait.c:655
#3  0x00007fdb9cd2ddbb in QWaitConditionPrivate::wait (deadline=..., this=0x556ec31705a0) at thread/qwaitcondition_unix.cpp:146
#4  QWaitCondition::wait (this=<optimized out>, mutex=0x556ec3170510, deadline=...) at thread/qwaitcondition_unix.cpp:225
#5  0x00007fdb9cd2e0c9 in QWaitCondition::wait (this=this@entry=0x556ec3170518, mutex=mutex@entry=0x556ec3170510, time=time@entry=18446744073709551615) at thread/qwaitcondition_unix.cpp:208
#6  0x00007fdba03c46f8 in QSGRenderThreadEventQueue::takeEvent (wait=true, this=0x556ec3170508) at scenegraph/qsgthreadedrenderloop.cpp:245
#7  QSGRenderThread::processEventsAndWaitForMore (this=this@entry=0x556ec3170490) at scenegraph/qsgthreadedrenderloop.cpp:710
#8  0x00007fdba03c4b2a in QSGRenderThread::run (this=0x556ec3170490) at scenegraph/qsgthreadedrenderloop.cpp:739
#9  0x00007fdb9cd26c72 in QThreadPrivate::start (arg=0x556ec3170490) at thread/qthread_unix.cpp:361
#10 0x00007fdb993ad6db in start_thread (arg=0x7fdb65eaa700) at pthread_create.c:463
#11 0x00007fdb9c62688f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 9 (Thread 0x7fdb656a9700 (LWP 14964)):
#0  0x00007fdb9c6150b4 in __GI___libc_read (fd=41, buf=buf@entry=0x7fdb656a8a50, nbytes=nbytes@entry=16) at ../sysdeps/unix/sysv/linux/read.c:27
#1  0x00007fdb96b102d0 in read (__nbytes=16, __buf=0x7fdb656a8a50, __fd=<optimized out>) at /usr/include/x86_64-linux-gnu/bits/unistd.h:44
#2  g_wakeup_acknowledge (wakeup=0x7fdb54002530) at ../../../../glib/gwakeup.c:210
#3  0x00007fdb96acb0b7 in g_main_context_check (context=context@entry=0x7fdb5400bf20, max_priority=2147483647, fds=fds@entry=0x7fdb540120e0, n_fds=n_fds@entry=1) at ../../../../glib/gmain.c:3680
#4  0x00007fdb96acb570 in g_main_context_iterate (context=context@entry=0x7fdb5400bf20, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ../../../../glib/gmain.c:3899
#5  0x00007fdb96acb6dc in g_main_context_iteration (context=0x7fdb5400bf20, may_block=may_block@entry=1) at ../../../../glib/gmain.c:3963
#6  0x00007fdb9cf5cdcb in QEventDispatcherGlib::processEvents (this=0x7fdb54009f80, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#7  0x00007fdb9cefe03a in QEventLoop::exec (this=this@entry=0x7fdb656a8c60, flags=..., flags@entry=...) at kernel/qeventloop.cpp:225
#8  0x00007fdb9cd254ca in QThread::exec (this=<optimized out>) at thread/qthread.cpp:531
#9  0x00007fdb9cd26c72 in QThreadPrivate::start (arg=0x556ec2f17200) at thread/qthread_unix.cpp:361
#10 0x00007fdb993ad6db in start_thread (arg=0x7fdb656a9700) at pthread_create.c:463
#11 0x00007fdb9c62688f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 8 (Thread 0x7fdb42c9c700 (LWP 14950)):
#0  0x00007fdb9c619bf9 in __GI___poll (fds=0x7fdb2812d6e0, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007fdb96acb5c9 in g_main_context_poll (priority=<optimized out>, n_fds=1, fds=0x7fdb2812d6e0, timeout=<optimized out>, context=0x7fdb28000bf0) at ../../../../glib/gmain.c:4203
#2  g_main_context_iterate (context=context@entry=0x7fdb28000bf0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ../../../../glib/gmain.c:3897
#3  0x00007fdb96acb6dc in g_main_context_iteration (context=0x7fdb28000bf0, may_block=may_block@entry=1) at ../../../../glib/gmain.c:3963
#4  0x00007fdb9cf5cdcb in QEventDispatcherGlib::processEvents (this=0x7fdb28000b20, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#5  0x00007fdb9cefe03a in QEventLoop::exec (this=this@entry=0x7fdb42c9bc60, flags=..., flags@entry=...) at kernel/qeventloop.cpp:225
#6  0x00007fdb9cd254ca in QThread::exec (this=<optimized out>) at thread/qthread.cpp:531
#7  0x00007fdb9cd26c72 in QThreadPrivate::start (arg=0x556ec2816cd0) at thread/qthread_unix.cpp:361
#8  0x00007fdb993ad6db in start_thread (arg=0x7fdb42c9c700) at pthread_create.c:463
#9  0x00007fdb9c62688f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 7 (Thread 0x7fdb4dfa0700 (LWP 14946)):
#0  QMutex::lock (this=this@entry=0x556ec28149d0) at thread/qmutex.cpp:222
#1  0x00007fdb9cf5d4ab in QMutexLocker::QMutexLocker (m=0x556ec28149d0, this=<synthetic pointer>) at ../../include/QtCore/../../src/corelib/thread/qmutex.h:206
#2  QThreadData::canWaitLocked (this=0x556ec28149a0) at ../../include/QtCore/5.12.3/QtCore/private/../../../../../src/corelib/thread/qthread_p.h:269
#3  postEventSourcePrepare (timeout=<synthetic pointer>, s=0x7fdb3c0047a0) at kernel/qeventdispatcher_glib.cpp:259
#4  postEventSourceCheck (source=0x7fdb3c0047a0) at kernel/qeventdispatcher_glib.cpp:269
#5  0x00007fdb96acafe1 in g_main_context_check (context=context@entry=0x7fdb3c000bf0, max_priority=2147483647, fds=fds@entry=0x7fdb3c004a10, n_fds=n_fds@entry=1) at ../../../../glib/gmain.c:3735
#6  0x00007fdb96acb570 in g_main_context_iterate (context=context@entry=0x7fdb3c000bf0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ../../../../glib/gmain.c:3899
#7  0x00007fdb96acb6dc in g_main_context_iteration (context=0x7fdb3c000bf0, may_block=may_block@entry=1) at ../../../../glib/gmain.c:3963
#8  0x00007fdb9cf5cdcb in QEventDispatcherGlib::processEvents (this=0x7fdb3c000b20, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#9  0x00007fdb9cefe03a in QEventLoop::exec (this=this@entry=0x7fdb4df9fc60, flags=..., flags@entry=...) at kernel/qeventloop.cpp:225
#10 0x00007fdb9cd254ca in QThread::exec (this=<optimized out>) at thread/qthread.cpp:531
#11 0x00007fdb9cd26c72 in QThreadPrivate::start (arg=0x556ec28083a0) at thread/qthread_unix.cpp:361
#12 0x00007fdb993ad6db in start_thread (arg=0x7fdb4dfa0700) at pthread_create.c:463
#13 0x00007fdb9c62688f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 6 (Thread 0x7fdb64ea8700 (LWP 14944)):
#0  0x00007fdb9c6150b4 in __GI___libc_read (fd=47, buf=buf@entry=0x7fdb64ea7ba0, nbytes=nbytes@entry=16) at ../sysdeps/unix/sysv/linux/read.c:27
#1  0x00007fdb96b102d0 in read (__nbytes=16, __buf=0x7fdb64ea7ba0, __fd=<optimized out>) at /usr/include/x86_64-linux-gnu/bits/unistd.h:44
#2  g_wakeup_acknowledge (wakeup=0x7fdb5c003d40) at ../../../../glib/gwakeup.c:210
#3  0x00007fdb96acb0b7 in g_main_context_check (context=context@entry=0x7fdb6000e590, max_priority=2147483647, fds=fds@entry=0x7fdb6000f190, n_fds=n_fds@entry=1) at ../../../../glib/gmain.c:3680
#4  0x00007fdb96acb570 in g_main_context_iterate (context=context@entry=0x7fdb6000e590, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ../../../../glib/gmain.c:3899
#5  0x00007fdb96acb6dc in g_main_context_iteration (context=0x7fdb6000e590, may_block=may_block@entry=1) at ../../../../glib/gmain.c:3963
#6  0x00007fdb96acb721 in glib_worker_main (data=<optimized out>) at ../../../../glib/gmain.c:5772
#7  0x00007fdb96af3195 in g_thread_proxy (data=0x7fdb60004c50) at ../../../../glib/gthread.c:784
#8  0x00007fdb993ad6db in start_thread (arg=0x7fdb64ea8700) at pthread_create.c:463
#9  0x00007fdb9c62688f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 5 (Thread 0x7fdb74163700 (LWP 14937)):
#0  0x00007fdb993b39f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x556ec0fb633c) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  __pthread_cond_wait_common (abstime=0x0, mutex=0x556ec0fb62e8, cond=0x556ec0fb6310) at pthread_cond_wait.c:502
#2  __pthread_cond_wait (cond=0x556ec0fb6310, mutex=0x556ec0fb62e8) at pthread_cond_wait.c:655
#3  0x00007fdb7558831a in ?? () from /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#4  0x00007fdb75588047 in ?? () from /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#5  0x00007fdb993ad6db in start_thread (arg=0x7fdb74163700) at pthread_create.c:463
#6  0x00007fdb9c62688f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 4 (Thread 0x7fdb835ef700 (LWP 14936)):
#0  0x00007fdb9c619bf9 in __GI___poll (fds=0x7fdb78004a00, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007fdb96acb5c9 in g_main_context_poll (priority=<optimized out>, n_fds=1, fds=0x7fdb78004a00, timeout=<optimized out>, context=0x7fdb78000bf0) at ../../../../glib/gmain.c:4203
#2  g_main_context_iterate (context=context@entry=0x7fdb78000bf0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ../../../../glib/gmain.c:3897
#3  0x00007fdb96acb6dc in g_main_context_iteration (context=0x7fdb78000bf0, may_block=may_block@entry=1) at ../../../../glib/gmain.c:3963
#4  0x00007fdb9cf5cdcb in QEventDispatcherGlib::processEvents (this=0x7fdb78000b20, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#5  0x00007fdb9cefe03a in QEventLoop::exec (this=this@entry=0x7fdb835eec40, flags=..., flags@entry=...) at kernel/qeventloop.cpp:225
#6  0x00007fdb9cd254ca in QThread::exec (this=this@entry=0x556ec0f0b520) at thread/qthread.cpp:531
#7  0x00007fdb9dd10115 in QQmlThreadPrivate::run (this=0x556ec0f0b520) at qml/ftw/qqmlthread.cpp:148
#8  0x00007fdb9cd26c72 in QThreadPrivate::start (arg=0x556ec0f0b520) at thread/qthread_unix.cpp:361
#9  0x00007fdb993ad6db in start_thread (arg=0x7fdb835ef700) at pthread_create.c:463
#10 0x00007fdb9c62688f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 3 (Thread 0x7fdb88d63700 (LWP 14935)):
#0  0x00007fdb9c6150b4 in __GI___libc_read (fd=7, buf=buf@entry=0x7fdb88d62a20, nbytes=nbytes@entry=16) at ../sysdeps/unix/sysv/linux/read.c:27
#1  0x00007fdb96b102d0 in read (__nbytes=16, __buf=0x7fdb88d62a20, __fd=<optimized out>) at /usr/include/x86_64-linux-gnu/bits/unistd.h:44
#2  g_wakeup_acknowledge (wakeup=0x7fdb84001bb0) at ../../../../glib/gwakeup.c:210
#3  0x00007fdb96acb0b7 in g_main_context_check (context=context@entry=0x7fdb7c000bf0, max_priority=2147483647, fds=fds@entry=0x7fdb7c018990, n_fds=n_fds@entry=1) at ../../../../glib/gmain.c:3680
#4  0x00007fdb96acb570 in g_main_context_iterate (context=context@entry=0x7fdb7c000bf0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ../../../../glib/gmain.c:3899
#5  0x00007fdb96acb6dc in g_main_context_iteration (context=0x7fdb7c000bf0, may_block=may_block@entry=1) at ../../../../glib/gmain.c:3963
#6  0x00007fdb9cf5cdcb in QEventDispatcherGlib::processEvents (this=0x7fdb7c000b20, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#7  0x00007fdb9cefe03a in QEventLoop::exec (this=this@entry=0x7fdb88d62c30, flags=..., flags@entry=...) at kernel/qeventloop.cpp:225
#8  0x00007fdb9cd254ca in QThread::exec (this=this@entry=0x7fdb9e325d80 <(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>) at thread/qthread.cpp:531
#9  0x00007fdb9e0ae015 in QDBusConnectionManager::run (this=0x7fdb9e325d80 <(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>) at qdbusconnection.cpp:178
#10 0x00007fdb9cd26c72 in QThreadPrivate::start (arg=0x7fdb9e325d80 <(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>) at thread/qthread_unix.cpp:361
#11 0x00007fdb993ad6db in start_thread (arg=0x7fdb88d63700) at pthread_create.c:463
#12 0x00007fdb9c62688f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (Thread 0x7fdb8c7ff700 (LWP 14934)):
#0  0x00007fdb9c619bf9 in __GI___poll (fds=fds@entry=0x7fdb8c7feb68, nfds=nfds@entry=1, timeout=timeout@entry=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007fdb96200747 in poll (__timeout=-1, __nfds=1, __fds=0x7fdb8c7feb68) at /usr/include/x86_64-linux-gnu/bits/poll2.h:46
#2  _xcb_conn_wait (c=c@entry=0x556ec0e40160, cond=cond@entry=0x556ec0e401a0, vector=vector@entry=0x0, count=count@entry=0x0) at ../../src/xcb_conn.c:479
#3  0x00007fdb9620236a in xcb_wait_for_event (c=c@entry=0x556ec0e40160) at ../../src/xcb_in.c:697
#4  0x00007fdb8f3df578 in QXcbEventQueue::run (this=0x556ec0e4bf20) at qxcbeventqueue.cpp:228
#5  0x00007fdb9cd26c72 in QThreadPrivate::start (arg=0x556ec0e4bf20) at thread/qthread_unix.cpp:361
#6  0x00007fdb993ad6db in start_thread (arg=0x7fdb8c7ff700) at pthread_create.c:463
#7  0x00007fdb9c62688f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7fdba19e6e00 (LWP 14932)):
[KCrash Handler]
#7  0x0000000000000000 in ?? ()
#8  0x00007fdb9db3af29 in QV4::Object::get (receiver=0x7ffeaa307968, hasProperty=0x0, name=0x7ffeaa307970, this=0x7ffeaa307968) at jsruntime/qv4object_p.h:308
#9  QV4::Lookup::getter0Inlinegetter0Inline (l=<optimized out>, engine=<optimized out>, object=...) at jsruntime/qv4lookup.cpp:247
#10 0x00007fdb675a4efe in ?? ()
#11 0x0000000000000000 in ?? ()