STEPS TO REPRODUCE
1. Start Discover 
2. Search for "Elisa"
3. Click on Elisa entry

#0  __pthread_kill_implementation (threadid=<optimized out>, signo=signo@entry=6, no_tid=no_tid@entry=0) at pthread_kill.c:44
#1  0x00007ffff4eafec3 in __pthread_kill_internal (signo=6, threadid=<optimized out>) at pthread_kill.c:78
#2  0x00007ffff4e5fa76 in __GI_raise (sig=sig@entry=6) at ../sysdeps/posix/raise.c:26
#3  0x00007ffff4e497fc in __GI_abort () at abort.c:79
#4  0x00007ffff5498b75 in qt_message_fatal (message=<synthetic pointer>..., context=<optimized out>) at global/qlogging.cpp:1914
#5  QMessageLogger::fatal(char const*, ...) const (this=this@entry=0x7fffffffcc30, msg=msg@entry=0x7ffff578b048 "ASSERT: \"%s\" in file %s, line %d") at global/qlogging.cpp:893
#6  0x00007ffff5497ff5 in qt_assert(char const*, char const*, int) (assertion=<optimized out>, file=<optimized out>, line=<optimized out>) at global/qglobal.cpp:3391
#7  0x00007fffa3f2a022 in KNSBackend::setResponsePending(bool) (this=0x749c20, pending=false) at /home/nico/kde/src/discover/libdiscover/backends/KNSBackend/KNSBackend.cpp:261
#8  0x00007fffa3f2a87e in KNSBackend::receivedEntries(QList<KNSCore::EntryInternal> const&) (this=0x749c20, entries=...) at /home/nico/kde/src/discover/libdiscover/backends/KNSBackend/KNSBackend.cpp:404
#9  0x00007fffa3f39426 in QtPrivate::FunctorCall<QtPrivate::IndexesList<0>, QtPrivate::List<QList<KNSCore::EntryInternal> const&>, void, void (KNSBackend::*)(QList<KNSCore::EntryInternal> const&)>::call(void (KNSBackend::*)(QList<KNSCore::EntryInternal> const&), KNSBackend*, void**)
    (f=(void (KNSBackend::*)(class KNSBackend * const, const class QList<KNSCore::EntryInternal> &)) 0x7fffa3f2a7fa <KNSBackend::receivedEntries(QList<KNSCore::EntryInternal> const&)>, o=0x749c20, arg=0x1cfb298) at /home/nico/kde/usr/include/QtCore/qobjectdefs_impl.h:152
#10 0x00007fffa3f38892 in QtPrivate::FunctionPointer<void (KNSBackend::*)(QList<KNSCore::EntryInternal> const&)>::call<QtPrivate::List<QList<KNSCore::EntryInternal> const&>, void>(void (KNSBackend::*)(QList<KNSCore::EntryInternal> const&), KNSBackend*, void**)
    (f=(void (KNSBackend::*)(class KNSBackend * const, const class QList<KNSCore::EntryInternal> &)) 0x7fffa3f2a7fa <KNSBackend::receivedEntries(QList<KNSCore::EntryInternal> const&)>, o=0x749c20, arg=0x1cfb298) at /home/nico/kde/usr/include/QtCore/qobjectdefs_impl.h:185
#11 0x00007fffa3f3715f in QtPrivate::QSlotObject<void (KNSBackend::*)(QList<KNSCore::EntryInternal> const&), QtPrivate::List<QList<KNSCore::EntryInternal> const&>, void>::impl(int, QtPrivate::QSlotObjectBase*, QObject*, void**, bool*) (which=1, this_=0x759d50, r=0x749c20, a=0x1cfb298, ret=0x0) at /home/nico/kde/usr/include/QtCore/qobjectdefs_impl.h:418
#12 0x00007ffff56dcb40 in QObject::event(QEvent*) (this=0x749c20, e=0x1cfb250) at kernel/qobject.cpp:1347
#13 0x00007ffff757c3ae in QApplicationPrivate::notify_helper(QObject*, QEvent*) (this=<optimized out>, receiver=0x749c20, e=0x1cfb250) at kernel/qapplication.cpp:3640
#14 0x00007ffff56b2848 in QCoreApplication::notifyInternal2(QObject*, QEvent*) (receiver=0x749c20, event=0x1cfb250) at kernel/qcoreapplication.cpp:1064
#15 0x00007ffff56b29ee in QCoreApplication::sendEvent(QObject*, QEvent*) (receiver=<optimized out>, event=<optimized out>) at kernel/qcoreapplication.cpp:1462
#16 0x00007ffff56b5521 in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) (receiver=0x0, event_type=0, data=0x4a7390) at kernel/qcoreapplication.cpp:1821
#17 0x00007ffff56b5978 in QCoreApplication::sendPostedEvents(QObject*, int) (receiver=<optimized out>, event_type=<optimized out>) at kernel/qcoreapplication.cpp:1680
#18 0x00007ffff5707713 in postEventSourceDispatch(GSource*, GSourceFunc, gpointer) (s=0x4e89d0) at kernel/qeventdispatcher_glib.cpp:277
#19 0x00007ffff2515c7f in g_main_dispatch (context=0x7fffdc005010) at ../glib/gmain.c:3454
#20 g_main_context_dispatch (context=0x7fffdc005010) at ../glib/gmain.c:4172
#21 0x00007ffff256c118 in g_main_context_iterate.constprop.0 (context=0x7fffdc005010, block=1, dispatch=1, self=<optimized out>) at ../glib/gmain.c:4248
#22 0x00007ffff2512f00 in g_main_context_iteration (context=0x7fffdc005010, may_block=1) at ../glib/gmain.c:4313
#23 0x00007ffff5706e36 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x4f0b80, flags=...) at kernel/qeventdispatcher_glib.cpp:423
#24 0x00007ffff56b142b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7fffffffd140, flags=..., flags@entry=...) at ../../include/QtCore/../../src/corelib/global/qflags.h:69
#25 0x00007ffff56b8f32 in QCoreApplication::exec() () at ../../include/QtCore/../../src/corelib/global/qflags.h:121
#26 0x00000000004214cb in main(int, char**) (argc=1, argv=0x7fffffffd718) at /home/nico/kde/src/discover/discover/main.cpp:224

Discover built from Plasma/5.27