Application: plasmashell (5.27.8)
 (Compiled from sources)
Qt Version: 5.15.8
Frameworks Version: 5.110.0
Operating System: FreeBSD 13.2-STABLE amd64
Windowing System: X11
Distribution (Platform): FreeBSD Ports
DrKonqi: 5.27.8 [KCrashBackend]

-- Information about the crash:
Log in and start kde

BAD:
plasmashell fails, the background remains all-black, and none of the KDE amenities are usable.
(some dialogues open but anything new, one would have to start from a shell prompt 'manually'.)

GOOD:
Nice KDE screen, all services working.

The crash can be reproduced every time.

-- Backtrace:
Application: Plasma (plasmashell), signal: Segmentation fault

[KCrash Handler]
#7  0x0000000000000000 in  ()
#8  0x00000009a7a2d4e7 in  () at /usr/local/lib/libsqlite3.so.0
#9  0x00000009a7a46efa in  () at /usr/local/lib/libsqlite3.so.0
#10 0x00000009a7a47274 in  () at /usr/local/lib/libsqlite3.so.0
#11 0x00000009a7a1c801 in  () at /usr/local/lib/libsqlite3.so.0
#12 0x00000009a5270ad5 in  () at /usr/local/lib/qt5/plugins/sqldrivers/libqsqlite.so
#13 0x00000009a527119c in  () at /usr/local/lib/qt5/plugins/sqldrivers/libqsqlite.so
#14 0x00000009a5272b35 in  () at /usr/local/lib/qt5/plugins/sqldrivers/libqsqlite.so
#15 0x000000084783ccab in QSqlQuery::exec(QString const&) () at /usr/local/lib/qt5/libQt5Sql.so.5
#16 0x000000084783c6ba in  () at /usr/local/lib/qt5/libQt5Sql.so.5
#17 0x000000084783c4e0 in QSqlQuery::QSqlQuery(QString const&, QSqlDatabase) () at /usr/local/lib/qt5/libQt5Sql.so.5
#18 0x0000000984a87846 in Common::Database::Private::query(QString const&) () at /usr/local/lib/libKF5ActivitiesStats.so.1
#19 0x0000000984a873a4 in Common::Database::pragma(QString const&) const () at /usr/local/lib/libKF5ActivitiesStats.so.1
#20 0x0000000984a86ae6 in Common::Database::instance(Common::Database::Source, Common::Database::OpenMode) () at /usr/local/lib/libKF5ActivitiesStats.so.1
#21 0x0000000984a7b4ea in KActivities::Stats::ResultModelPrivate::ResultModelPrivate(KActivities::Stats::Query, QString const&, KActivities::Stats::ResultModel*) () at /usr/local/lib/libKF5ActivitiesStats.so.1
#22 0x0000000984a79d85 in KActivities::Stats::ResultModel::ResultModel(KActivities::Stats::Query, QObject*) () at /usr/local/lib/libKF5ActivitiesStats.so.1
#23 0x00000009842c0214 in  () at /usr/local/lib/qt5/qml/org/kde/plasma/private/kicker/libkickerplugin.so
#24 0x00000009842af3e4 in  () at /usr/local/lib/qt5/qml/org/kde/plasma/private/kicker/libkickerplugin.so
#25 0x000000082fcbb13a in QQmlType::create(QObject**, void**, unsigned long) const () at /usr/local/lib/qt5/libQt5Qml.so.5
#26 0x000000082fd02c53 in QQmlObjectCreator::createInstance(int, QObject*, bool) () at /usr/local/lib/qt5/libQt5Qml.so.5
#27 0x000000082fd03fec in QQmlObjectCreator::setPropertyBinding(QQmlPropertyData const*, QV4::CompiledData::Binding const*) () at /usr/local/lib/qt5/libQt5Qml.so.5
#28 0x000000082fd05ece in QQmlObjectCreator::setupBindings(bool) () at /usr/local/lib/qt5/libQt5Qml.so.5
#29 0x000000082fd08915 in QQmlObjectCreator::populateInstance(int, QObject*, QObject*, QQmlPropertyData const*) () at /usr/local/lib/qt5/libQt5Qml.so.5
#30 0x000000082fd033fa in QQmlObjectCreator::createInstance(int, QObject*, bool) () at /usr/local/lib/qt5/libQt5Qml.so.5
#31 0x000000082fd02482 in QQmlObjectCreator::create(int, QObject*, QQmlInstantiationInterrupt*, int) () at /usr/local/lib/qt5/libQt5Qml.so.5
#32 0x000000082fca482c in QQmlIncubatorPrivate::incubate(QQmlInstantiationInterrupt&) () at /usr/local/lib/qt5/libQt5Qml.so.5
#33 0x000000082fca442d in QQmlEnginePrivate::incubate(QQmlIncubator&, QQmlContextData*) () at /usr/local/lib/qt5/libQt5Qml.so.5
#34 0x000000082fca0eaf in QQmlComponent::create(QQmlIncubator&, QQmlContext*, QQmlContext*) () at /usr/local/lib/qt5/libQt5Qml.so.5
#35 0x000000082864ac3b in KDeclarative::QmlObject::completeInitialization(QHash<QString, QVariant> const&) () at /usr/local/lib/libKF5Declarative.so.5
#36 0x0000000822052756 in PlasmaQuick::AppletQuickItem::init() () at /usr/local/lib/libKF5PlasmaQuick.so.5
#37 0x00000008b7a5fe77 in  () at /usr/local/lib/qt5/plugins/plasma/scriptengines/plasma_appletscript_declarative.so
#38 0x0000000822053e3a in PlasmaQuick::AppletQuickItem::itemChange(QQuickItem::ItemChange, QQuickItem::ItemChangeData const&) () at /usr/local/lib/libKF5PlasmaQuick.so.5
#39 0x000000082ed1a522 in QQuickItemPrivate::refWindow(QQuickWindow*) () at /usr/local/lib/qt5/libQt5Quick.so.5
#40 0x000000082ed1a408 in QQuickItemPrivate::refWindow(QQuickWindow*) () at /usr/local/lib/qt5/libQt5Quick.so.5
#41 0x000000082ed17920 in QQuickItem::setParentItem(QQuickItem*) () at /usr/local/lib/qt5/libQt5Quick.so.5
#42 0x0000000822060985 in  () at /usr/local/lib/libKF5PlasmaQuick.so.5
#43 0x000000000025d3f5 in  ()
#44 0x000000083cc5599a in  () at /usr/local/lib/qt5/libQt5Core.so.5
#45 0x000000083cc5ab23 in QTimer::timerEvent(QTimerEvent*) () at /usr/local/lib/qt5/libQt5Core.so.5
#46 0x000000083cc4a8d7 in QObject::event(QEvent*) () at /usr/local/lib/qt5/libQt5Core.so.5
#47 0x0000000839499623 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/local/lib/qt5/libQt5Widgets.so.5
#48 0x000000083949a9ce in QApplication::notify(QObject*, QEvent*) () at /usr/local/lib/qt5/libQt5Widgets.so.5
#49 0x000000083cc22111 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/local/lib/qt5/libQt5Core.so.5
#50 0x000000083cc73bd4 in QTimerInfoList::activateTimers() () at /usr/local/lib/qt5/libQt5Core.so.5
#51 0x000000083cc7554d in  () at /usr/local/lib/qt5/libQt5Core.so.5
#52 0x0000000851fe0ce1 in  () at /usr/local/lib/libglib-2.0.so.0
#53 0x0000000851fe1079 in  () at /usr/local/lib/libglib-2.0.so.0
#54 0x0000000851fe1116 in g_main_context_iteration () at /usr/local/lib/libglib-2.0.so.0
#55 0x000000083cc74c35 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/local/lib/qt5/libQt5Core.so.5
#56 0x000000083cc1eaa6 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/local/lib/qt5/libQt5Core.so.5
#57 0x000000083cc22791 in QCoreApplication::exec() () at /usr/local/lib/qt5/libQt5Core.so.5
#58 0x0000000000242752 in  ()
#59 0x0000000000239590 in  ()
#60 0x0000000000239490 in  ()
#61 0x0000000000000000 in  ()
[Inferior 1 (process 34350) detached]

Reported using DrKonqi