SUMMARY
The issue started on 11th November after an update. 


STEPS TO REPRODUCE
1. 
2. 
3. 

OBSERVED RESULT


EXPECTED RESULT


SOFTWARE/OS VERSIONS
Windows: 
macOS: 
Linux/KDE Plasma: Kernel 5.9.9/KDE Plasma 5.20.3
(available in About System)
KDE Plasma Version: 5.20.3
KDE Frameworks Version: 5.77.0
Qt Version: 5.15.1

ADDITIONAL INFORMATION

Application: baloo_file_extractor (baloo_file_extractor), signal: Aborted

[KCrash Handler]
#4  0x00007f0a4e8fc615 in raise () from /usr/lib/libc.so.6
#5  0x00007f0a4e8e5862 in abort () from /usr/lib/libc.so.6
#6  0x00007f0a4e5c9634 in ?? () from /usr/lib/liblmdb.so
#7  0x00007f0a4e5bd185 in ?? () from /usr/lib/liblmdb.so
#8  0x00007f0a4e5bf716 in ?? () from /usr/lib/liblmdb.so
#9  0x00007f0a4e5bf963 in ?? () from /usr/lib/liblmdb.so
#10 0x00007f0a4e5c1518 in ?? () from /usr/lib/liblmdb.so
#11 0x00007f0a4e5c5919 in mdb_cursor_del () from /usr/lib/liblmdb.so
#12 0x00007f0a4e5c71e3 in ?? () from /usr/lib/liblmdb.so
#13 0x00007f0a4f930076 in Baloo::DocumentDB::del(unsigned long long) () from /usr/lib/libKF5BalooEngine.so.5
#14 0x00007f0a4f949df5 in Baloo::WriteTransaction::removeDocument(unsigned long long) () from /usr/lib/libKF5BalooEngine.so.5
#15 0x000055b44d5839c1 in ?? ()
#16 0x000055b44d584591 in ?? ()
#17 0x00007f0a4ef54143 in ?? () from /usr/lib/libQt5Core.so.5
#18 0x00007f0a4ef4571f in QObject::event(QEvent*) () from /usr/lib/libQt5Core.so.5
#19 0x00007f0a4ef18cda in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /usr/lib/libQt5Core.so.5
#20 0x00007f0a4ef70cc5 in QTimerInfoList::activateTimers() () from /usr/lib/libQt5Core.so.5
#21 0x00007f0a4ef71572 in ?? () from /usr/lib/libQt5Core.so.5
#22 0x00007f0a4d9d6914 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#23 0x00007f0a4da2a7d1 in ?? () from /usr/lib/libglib-2.0.so.0
#24 0x00007f0a4d9d5121 in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#25 0x00007f0a4ef71941 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQt5Core.so.5
#26 0x00007f0a4ef1765c in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQt5Core.so.5
#27 0x00007f0a4ef1faf4 in QCoreApplication::exec() () from /usr/lib/libQt5Core.so.5
#28 0x000055b44d582165 in ?? ()
#29 0x00007f0a4e8e7152 in __libc_start_main () from /usr/lib/libc.so.6
#30 0x000055b44d58228e in ?? ()
[Inferior 1 (process 601385) detached]