Application: akonadi_baloo_indexer (4.14)
KDE Platform Version: 4.14.36
Qt Version: 4.8.7
Operating System: Linux 4.14.0-2-amd64 x86_64
Distribution: Debian GNU/Linux testing (buster)

-- Information about the crash:
- What I was doing when the application crashed:
"akonadictl restart", (as recommended after updating to akonadi (4:17.08.0-1))

Deatils: 
"Executable: akonadi_baloo_indexer PID: 7193 Signal: Aborted (6) Time: 18.01.2018 11:42:19"

-- 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]
#4  0x00007fcc1e64f6a0 in __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:51
#5  0x00007fcc1e650cf7 in __GI_abort () at abort.c:90
#6  0x00007fcc221fcea5 in qt_message_output(QtMsgType, char const*) () at /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#7  0x00007fcc20d5ee06 in  () at /usr/lib/libakonadi-kde.so.4
#8  0x00007fcc20d5cd11 in  () at /usr/lib/libakonadi-kde.so.4
#9  0x00007fcc20d5caaa in  () at /usr/lib/libakonadi-kde.so.4
#10 0x00007fcc22332381 in QObject::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#11 0x00007fcc1f88f54c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQtGui.so.4
#12 0x00007fcc1f89652c in QApplication::notify(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQtGui.so.4
#13 0x00007fcc20606d4a in KApplication::notify(QObject*, QEvent*) () at /usr/lib/libkdeui.so.5
#14 0x00007fcc22317f1d in QCoreApplication::notifyInternal(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#15 0x00007fcc2231ba16 in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () at /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#16 0x00007fcc22348703 in  () at /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#17 0x00007fcc1dd15fb7 in g_main_context_dispatch () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#18 0x00007fcc1dd161f0 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#19 0x00007fcc1dd1627c in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#20 0x00007fcc22348854 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#21 0x00007fcc1f9395d6 in  () at /usr/lib/x86_64-linux-gnu/libQtGui.so.4
#22 0x00007fcc223167ef in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#23 0x00007fcc22316b55 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#24 0x00007fcc2231cbd9 in QCoreApplication::exec() () at /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#25 0x00007fcc20d59dd4 in Akonadi::AgentBase::init(Akonadi::AgentBase*) () at /usr/lib/libakonadi-kde.so.4
#26 0x000055ca518786d8 in  ()
#27 0x00007fcc1e63bf2a in __libc_start_main (main=0x55ca51871cf0, argc=3, argv=0x7ffc27ef33f8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffc27ef33e8) at ../csu/libc-start.c:310
#28 0x000055ca51871daa in _start ()

Reported using DrKonqi