baloorunner crash - kubuntu 19.04

Everytime that i use baloorunner search from the application launcher it crashes with segmentation fault.
these are developer informations :

Application: baloorunner (baloorunner), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f8d53bca800 (LWP 3077))]

Thread 3 (Thread 0x7f8d50a57700 (LWP 3079)):
#0 0x00007f8d5793e729 in __GI___poll (fds=0x7f8d44004e30, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1 0x00007f8d56528cb6 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2 0x00007f8d56528ddc in g_main_context_iteration () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3 0x00007f8d57ebf063 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4 0x00007f8d57e6a5bb in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5 0x00007f8d57cb52c6 in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6 0x00007f8d58d9b565 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#7 0x00007f8d57cb6612 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8 0x00007f8d56d92182 in start_thread (arg=<optimized out>) at pthread_create.c:486
#9 0x00007f8d5794ab1f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (Thread 0x7f8d52ba9700 (LWP 3078)):
#0 0x00007f8d5793e729 in __GI___poll (fds=0x7f8d52ba8ca8, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1 0x00007f8d5609c917 in ?? () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2 0x00007f8d5609e53a in xcb_wait_for_event () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3 0x00007f8d537996a8 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#4 0x00007f8d57cb6612 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5 0x00007f8d56d92182 in start_thread (arg=<optimized out>) at pthread_create.c:486
#6 0x00007f8d5794ab1f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7f8d53bca800 (LWP 3077)):
[KCrash Handler]
#6 __memmove_sse2_unaligned_erms () at ../sysdeps/x86_64/multiarch/memmove-vec-unaligned-erms.S:326
#7 0x00007f8d57cc3dc4 in QByteArray::QByteArray(char const*, int) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8 0x00007f8d5768735f in ?? () from /usr/lib/x86_64-linux-gnu/libKF5BalooEngine.so.5
#9 0x00007f8d57687431 in Baloo::PostingDB::iter(QByteArray const&) () from /usr/lib/x86_64-linux-gnu/libKF5BalooEngine.so.5
#10 0x00007f8d5768e560 in Baloo::Transaction::postingIterator(Baloo::EngineQuery const&) const () from /usr/lib/x86_64-linux-gnu/libKF5BalooEngine.so.5
#11 0x00007f8d58f8f5ce in ?? () from /usr/lib/x86_64-linux-gnu/libKF5Baloo.so.5
#12 0x00007f8d58f8f39d in ?? () from /usr/lib/x86_64-linux-gnu/libKF5Baloo.so.5
#13 0x00007f8d58f90468 in ?? () from /usr/lib/x86_64-linux-gnu/libKF5Baloo.so.5
#14 0x00007f8d58f7efc0 in Baloo::Query::exec() () from /usr/lib/x86_64-linux-gnu/libKF5Baloo.so.5
#15 0x00005604fe2fa92a in ?? ()
#16 0x00005604fe2fbf16 in ?? ()
#17 0x00007f8d57e95563 in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#18 0x00007f8d57ea10c7 in QTimer::timeout(QTimer::QPrivateSignal) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#19 0x00007f8d57e95c5b in QObject::event(QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#20 0x00007f8d58883551 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#21 0x00007f8d5888a930 in QApplication::notify(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#22 0x00007f8d57e6b8e9 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#23 0x00007f8d57ebe453 in QTimerInfoList::activateTimers() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#24 0x00007f8d57ebeca4 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#25 0x00007f8d56528aae in g_main_context_dispatch () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#26 0x00007f8d56528d48 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#27 0x00007f8d56528ddc in g_main_context_iteration () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#28 0x00007f8d57ebf047 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#29 0x00007f8d57e6a5bb in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#30 0x00007f8d57e725e2 in QCoreApplication::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#31 0x00005604fe2f892f in ?? ()
#32 0x00007f8d57853b6b in __libc_start_main (main=0x5604fe2f88c0, argc=1, argv=0x7ffc34adc928, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffc34adc918) at ../csu/libc-start.c:308
#33 0x00005604fe2f89aa in _start ()
[Inferior 1 (process 3077) detached]