Application: akonadi_baloo_indexer (4.14)
KDE Platform Version: 4.14.38
Qt Version: 4.8.7
Operating System: Linux 4.18.0-10-generic x86_64
Distribution: Ubuntu 18.10

-- Information about the crash:
- What I was doing when the application crashed:

Restarting Akonadi server over Akonadi Console, also when just stopping server and restarting it over Kontact

The crash can be reproduced every time.

-- Backtrace:
Application: No such method 'agentName' in interface 'org.freedesktop.Akonadi.AgentManager' at object path '/AgentManager' (signature 'ss') (akonadi_baloo_indexer), signal: Aborted
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[KCrash Handler]
#6  0x00007f7d72dc8077 in __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:50
#7  0x00007f7d72da9535 in __GI_abort () at abort.c:79
#8  0x00007f7d75d7bf15 in qt_message_output(QtMsgType, char const*) () at /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#9  0x00007f7d74adb876 in  () at /usr/lib/libakonadi-kde.so.4
#10 0x00007f7d74ad9781 in  () at /usr/lib/libakonadi-kde.so.4
#11 0x00007f7d74ad951a in  () at /usr/lib/libakonadi-kde.so.4
#12 0x00007f7d75eb0d11 in QObject::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#13 0x00007f7d7383103c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQtGui.so.4
#14 0x00007f7d73837f76 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQtGui.so.4
#15 0x00007f7d745926ca in KApplication::notify(QObject*, QEvent*) () at /usr/lib/libkdeui.so.5
#16 0x00007f7d75e968ad in QCoreApplication::notifyInternal(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#17 0x00007f7d75e9a366 in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () at /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#18 0x00007f7d75ec709e in  () at /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#19 0x00007f7d72a71c3e in g_main_context_dispatch () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#20 0x00007f7d72a71ed8 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#21 0x00007f7d72a71f6c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#22 0x00007f7d75ec720e in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#23 0x00007f7d738de666 in  () at /usr/lib/x86_64-linux-gnu/libQtGui.so.4
#24 0x00007f7d75e9512f in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#25 0x00007f7d75e95495 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#26 0x00007f7d75e9b459 in QCoreApplication::exec() () at /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#27 0x00007f7d74ad6844 in Akonadi::AgentBase::init(Akonadi::AgentBase*) () at /usr/lib/libakonadi-kde.so.4
#28 0x000055d4e8a5c1f3 in  ()
#29 0x00007f7d72dab09b in __libc_start_main (main=0x55d4e8a553a0, argc=3, argv=0x7ffd31709638, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffd31709628) at ../csu/libc-start.c:308
#30 0x000055d4e8a5545a in _start ()
[Inferior 1 (process 4102) detached]

Reported using DrKonqi