Application: baloo_file (baloo_file), signal: Aborted
[KCrash Handler]
#4 0x00007f8043bb936c in ?? () from /usr/lib/libc.so.6
#5 0x00007f8043b69838 in raise () from /usr/lib/libc.so.6
#6 0x00007f8043b53535 in abort () from /usr/lib/libc.so.6
#7 0x00007f80430e3624 in ?? () from /usr/lib/liblmdb.so
#8 0x00007f80430d7185 in ?? () from /usr/lib/liblmdb.so
#9 0x00007f80430d9716 in ?? () from /usr/lib/liblmdb.so
#10 0x00007f80430d9963 in ?? () from /usr/lib/liblmdb.so
#11 0x00007f80430db518 in ?? () from /usr/lib/liblmdb.so
#12 0x00007f80430df939 in mdb_cursor_del () from /usr/lib/liblmdb.so
#13 0x00007f80430e11d3 in ?? () from /usr/lib/liblmdb.so
#14 0x00007f804458cf8e in Baloo::MTimeDB::del(unsigned int, unsigned long long) () from /usr/lib/libKF5BalooEngine.so.5
#15 0x00007f804459e691 in Baloo::WriteTransaction::replaceDocument(Baloo::Document const&, QFlags<Baloo::DocumentOperation>) () from /usr/lib/libKF5BalooEngine.so.5
#16 0x00005625ebb2379a in ?? ()
#17 0x00007f804413e531 in ?? () from /usr/lib/libQt5Core.so.5
#18 0x00007f804413a36a in ?? () from /usr/lib/libQt5Core.so.5
#19 0x00007f8043bb754d in ?? () from /usr/lib/libc.so.6
#20 0x00007f8043c3cb14 in clone () from /usr/lib/libc.so.6
Thread 3 (Thread 0x7f803e88a640 (LWP 6142) "baloo_file"):
#1 0x00007f8042291524 in ?? () from /usr/lib/libusbmuxd-2.0.so.6
#2 0x00007f80422928a9 in ?? () from /usr/lib/libusbmuxd-2.0.so.6
#3 0x00007f8043bb754d in ?? () from /usr/lib/libc.so.6
#4 0x00007f8043c3cb14 in clone () from /usr/lib/libc.so.6
Thread 2 (Thread 0x7f803f38d640 (LWP 6141) "QDBusConnection"):
#1 0x00007f80428bd976 in ?? () from /usr/lib/libglib-2.0.so.0
#2 0x00007f80428646c5 in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#3 0x00007f804432e7df in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQt5Core.so.5
#4 0x00007f80442dc79c in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQt5Core.so.5
#5 0x00007f804413d53f in QThread::exec() () from /usr/lib/libQt5Core.so.5
#6 0x00007f80445cd75a in ?? () from /usr/lib/libQt5DBus.so.5
#7 0x00007f804413a36a in ?? () from /usr/lib/libQt5Core.so.5
#8 0x00007f8043bb754d in ?? () from /usr/lib/libc.so.6
#9 0x00007f8043c3cb14 in clone () from /usr/lib/libc.so.6
Thread 1 (Thread 0x7f803f679a40 (LWP 6133) "baloo_file"):
#1 0x00007f80428bd976 in ?? () from /usr/lib/libglib-2.0.so.0
#2 0x00007f80428646c5 in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#3 0x00007f804432e7bc in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQt5Core.so.5
#4 0x00007f80442dc79c in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQt5Core.so.5
#5 0x00007f80442e72a9 in QCoreApplication::exec() () from /usr/lib/libQt5Core.so.5
#6 0x00005625ebb0fdab in ?? ()
#7 0x00007f8043b54290 in ?? () from /usr/lib/libc.so.6
#8 0x00007f8043b5434a in __libc_start_main () from /usr/lib/libc.so.6
#9 0x00005625ebb10245 in ?? ()
[Inferior 1 (process 6133) detached]
how can i fix it