Summary says by itself.

Operating System: KDE neon Unstable Edition
KDE Plasma Version: 5.15.80
KDE Frameworks Version: 5.58.0
Qt Version: 5.12.0

Application: Gerenciador de pacotes Muon (muon), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7fe4f0f248c0 (LWP 9897))]

Thread 6 (Thread 0x7fe4bdb7f700 (LWP 12191)):
#0  0x00007fe4ecb0bbf9 in __GI___poll (fds=0x7fe4b8001f60, nfds=3, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007fe4bc38c481 in ?? () from /usr/lib/x86_64-linux-gnu/libpulse.so.0
#2  0x00007fe4bc37de40 in pa_mainloop_poll () from /usr/lib/x86_64-linux-gnu/libpulse.so.0
#3  0x00007fe4bc37e4d0 in pa_mainloop_iterate () from /usr/lib/x86_64-linux-gnu/libpulse.so.0
#4  0x00007fe4bc37e560 in pa_mainloop_run () from /usr/lib/x86_64-linux-gnu/libpulse.so.0
#5  0x00007fe4bc38c3c9 in ?? () from /usr/lib/x86_64-linux-gnu/libpulse.so.0
#6  0x00007fe4bc12e318 in ?? () from /usr/lib/x86_64-linux-gnu/pulseaudio/libpulsecommon-11.1.so
#7  0x00007fe4ea0696db in start_thread (arg=0x7fe4bdb7f700) at pthread_create.c:463
#8  0x00007fe4ecb1888f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 5 (Thread 0x7fe4c50d7700 (LWP 9904)):
#0  0x00007fe4ea06f9f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x555fc6061178) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  __pthread_cond_wait_common (abstime=0x0, mutex=0x555fc6061128, cond=0x555fc6061150) at pthread_cond_wait.c:502
#2  __pthread_cond_wait (cond=0x555fc6061150, mutex=0x555fc6061128) at pthread_cond_wait.c:655
#3  0x00007fe4c6476dcb in ?? () from /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#4  0x00007fe4c6476af7 in ?? () from /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#5  0x00007fe4ea0696db in start_thread (arg=0x7fe4c50d7700) at pthread_create.c:463
#6  0x00007fe4ecb1888f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 4 (Thread 0x7fe4cd76d700 (LWP 9903)):
#0  0x00007fe4ecb0bbf9 in __GI___poll (fds=0x7fe4c8004a10, nfds=1, timeout=10245) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007fe4e74aa539 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fe4e74aa64c in g_main_context_iteration () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fe4ed44e15b in QEventDispatcherGlib::processEvents (this=0x7fe4c8000b20, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#4  0x00007fe4ed3ef64a in QEventLoop::exec (this=this@entry=0x7fe4cd76cce0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:225
#5  0x00007fe4ed21741a in QThread::exec (this=<optimized out>) at thread/qthread.cpp:531
#6  0x00007fe4ed218bc2 in QThreadPrivate::start (arg=0x555fc625c750) at thread/qthread_unix.cpp:361
#7  0x00007fe4ea0696db in start_thread (arg=0x7fe4cd76d700) at pthread_create.c:463
#8  0x00007fe4ecb1888f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 3 (Thread 0x7fe4d6f10700 (LWP 9900)):
#0  0x00007fe4e74f0064 in g_mutex_unlock () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007fe4e74a9427 in g_main_context_acquire () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fe4e74aa3f5 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fe4e74aa64c in g_main_context_iteration () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fe4ed44e15b in QEventDispatcherGlib::processEvents (this=0x7fe4d0000b20, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#5  0x00007fe4ed3ef64a in QEventLoop::exec (this=this@entry=0x7fe4d6f0fcb0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:225
#6  0x00007fe4ed21741a in QThread::exec (this=this@entry=0x7fe4eb9bfd80 <(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>) at thread/qthread.cpp:531
#7  0x00007fe4eb748015 in QDBusConnectionManager::run (this=0x7fe4eb9bfd80 <(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>) at qdbusconnection.cpp:178
#8  0x00007fe4ed218bc2 in QThreadPrivate::start (arg=0x7fe4eb9bfd80 <(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>) at thread/qthread_unix.cpp:361
#9  0x00007fe4ea0696db in start_thread (arg=0x7fe4d6f10700) at pthread_create.c:463
#10 0x00007fe4ecb1888f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (Thread 0x7fe4dffe0700 (LWP 9899)):
#0  0x00007fe4ecb0bbf9 in __GI___poll (fds=0x7fe4dffdfbf8, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007fe4e68a7747 in ?? () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007fe4e68a936a in xcb_wait_for_event () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007fe4e135432a in QXcbEventQueue::run (this=0x555fc5edd300) at qxcbeventqueue.cpp:225
#4  0x00007fe4ed218bc2 in QThreadPrivate::start (arg=0x555fc5edd300) at thread/qthread_unix.cpp:361
#5  0x00007fe4ea0696db in start_thread (arg=0x7fe4dffe0700) at pthread_create.c:463
#6  0x00007fe4ecb1888f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7fe4f0f248c0 (LWP 9897)):
[KCrash Handler]
#7  pkgDepCache::FindPkg (this=0x0, Name="xserver-xorg-input-libinput") at /usr/include/apt-pkg/depcache.h:357
#8  QApt::Backend::package (this=this@entry=0x555fc625c020, name=...) at ./src/backend.cpp:455
#9  0x00007fe4f05c5cca in QApt::Backend::search (this=0x555fc625c020, searchString=...) at ./src/backend.cpp:694
#10 0x0000555fc591355a in ?? ()
#11 0x0000555fc5917f6a in ?? ()
#12 0x0000555fc5906880 in ?? ()
#13 0x0000555fc5906955 in ?? ()
#14 0x0000555fc5932d1b in ?? ()
#15 0x00007fe4ed420e25 in QMetaObject::activate (sender=sender@entry=0x555fc6ec8710, signalOffset=<optimized out>, local_signal_index=local_signal_index@entry=1, argv=argv@entry=0x7ffeca4a4080) at kernel/qobject.cpp:3778
#16 0x00007fe4ed4214f7 in QMetaObject::activate (sender=sender@entry=0x555fc6ec8710, m=m@entry=0x7fe4f080bae0 <QApt::Transaction::staticMetaObject>, local_signal_index=local_signal_index@entry=1, argv=argv@entry=0x7ffeca4a4080) at kernel/qobject.cpp:3631
#17 0x00007fe4f05f7b71 in QApt::Transaction::statusChanged (this=this@entry=0x555fc6ec8710, _t1=<optimized out>) at ./obj-x86_64-linux-gnu/src/QApt_autogen/EWIEGA46WW/moc_transaction.cpp:535
#18 0x00007fe4f05eb786 in QApt::Transaction::updateProperty (this=0x555fc6ec8710, type=<optimized out>, variant=...) at ./src/transaction.cpp:634
#19 0x00007fe4f05f8a1f in QApt::Transaction::qt_static_metacall (_o=0x555fc6ec8710, _c=<optimized out>, _id=<optimized out>, _a=<optimized out>) at ./obj-x86_64-linux-gnu/src/QApt_autogen/EWIEGA46WW/moc_transaction.cpp:286
#20 0x00007fe4ed420e25 in QMetaObject::activate (sender=0x555fc64aa3d0, signalOffset=<optimized out>, local_signal_index=local_signal_index@entry=4, argv=argv@entry=0x7ffeca4a42d0) at kernel/qobject.cpp:3778
#21 0x00007fe4ed4214f7 in QMetaObject::activate (sender=<optimized out>, m=m@entry=0x7fe4f080b6c0 <OrgKubuntuQaptworker3TransactionInterface::staticMetaObject>, local_signal_index=local_signal_index@entry=4, argv=argv@entry=0x7ffeca4a42d0) at kernel/qobject.cpp:3631
#22 0x00007fe4f05f55ac in OrgKubuntuQaptworker3TransactionInterface::propertyChanged (_t2=..., _t1=<optimized out>, this=<optimized out>) at ./obj-x86_64-linux-gnu/src/transactioninterface_p.moc:375
#23 OrgKubuntuQaptworker3TransactionInterface::qt_static_metacall (_o=_o@entry=0x555fc64aa3d0, _c=_c@entry=QMetaObject::InvokeMetaMethod, _id=_id@entry=4, _a=_a@entry=0x7ffeca4a4430) at ./obj-x86_64-linux-gnu/src/transactioninterface_p.moc:188
#24 0x00007fe4f05f6b95 in OrgKubuntuQaptworker3TransactionInterface::qt_metacall (this=0x555fc64aa3d0, _c=QMetaObject::InvokeMetaMethod, _id=4, _a=0x7ffeca4a4430) at ./obj-x86_64-linux-gnu/src/transactioninterface_p.moc:316
#25 0x00007fe4eb753128 in QDBusConnectionPrivate::deliverCall (this=<optimized out>, object=<optimized out>, msg=..., metaTypes=..., slotIdx=<optimized out>) at qdbusintegrator.cpp:991
#26 0x00007fe4ed421992 in QObject::event (this=0x555fc64aa3d0, e=<optimized out>) at kernel/qobject.cpp:1249
#27 0x00007fe4ee1e78ac in QApplicationPrivate::notify_helper (this=this@entry=0x555fc5ec2860, receiver=receiver@entry=0x555fc64aa3d0, e=e@entry=0x7fe4d0023ac0) at kernel/qapplication.cpp:3752
#28 0x00007fe4ee1eee40 in QApplication::notify (this=0x7ffeca4a4b10, receiver=0x555fc64aa3d0, e=0x7fe4d0023ac0) at kernel/qapplication.cpp:3499
#29 0x00007fe4ed3f1328 in QCoreApplication::notifyInternal2 (receiver=0x555fc64aa3d0, event=0x7fe4d0023ac0) at kernel/qcoreapplication.cpp:1061
#30 0x00007fe4ed3f14fe in QCoreApplication::sendEvent (receiver=<optimized out>, event=event@entry=0x7fe4d0023ac0) at kernel/qcoreapplication.cpp:1451
#31 0x00007fe4ed3f3e87 in QCoreApplicationPrivate::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0, data=0x555fc5ec29e0) at kernel/qcoreapplication.cpp:1800
#32 0x00007fe4ed3f4428 in QCoreApplication::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0) at kernel/qcoreapplication.cpp:1654
#33 0x00007fe4ed44eb23 in postEventSourceDispatch (s=0x555fc5f13410) at kernel/qeventdispatcher_glib.cpp:276
#34 0x00007fe4e74aa387 in g_main_context_dispatch () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#35 0x00007fe4e74aa5c0 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#36 0x00007fe4e74aa64c in g_main_context_iteration () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#37 0x00007fe4ed44e13f in QEventDispatcherGlib::processEvents (this=0x555fc5f23ad0, flags=...) at kernel/qeventdispatcher_glib.cpp:422
#38 0x00007fe4ed3ef64a in QEventLoop::exec (this=this@entry=0x7ffeca4a4a50, flags=..., flags@entry=...) at kernel/qeventloop.cpp:225
#39 0x00007fe4ed3f8800 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1364
#40 0x0000555fc5904cd5 in ?? ()
#41 0x00007fe4eca18b97 in __libc_start_main (main=0x555fc59048b0, argc=1, argv=0x7ffeca4a4c78, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffeca4a4c68) at ../csu/libc-start.c:310
#42 0x0000555fc5904d6a in _start ()