Bug 360477

Summary: Crash when adding a new face tag
Product: [Applications] digikam Reporter: Gregor Mi <codestruct>
Component: Faces-EngineAssignee: Digikam Developers <digikam-bugs-null>
Status: RESOLVED FIXED    
Severity: crash CC: caulier.gilles, metzpinguin
Priority: NOR Keywords: drkonqi
Version: unspecified   
Target Milestone: ---   
Platform: openSUSE   
OS: Linux   
Latest Commit: Version Fixed In: 7.0.0
Sentry Crash Report:

Description Gregor Mi 2016-03-13 14:25:26 UTC 
Application: digikam (5.0.0-beta3)

Qt Version: 5.5.1
Operating System: Linux 4.1.15-8-default x86_64
Distribution: "openSUSE Leap 42.1 (x86_64)"

-- Information about the crash:
- What I was doing when the application crashed:
1. Have an image in the preview window open
2. Click on the "Add a face tag" icon
3. Draw a rect to mark a face
4. Enter a description
5. Press Enter => Crash

After digikam restart one can see that the face tag was successfully applied.

The crash can be reproduced every time.

-- Backtrace:
Application: digiKam (digikam), signal: Segmentation fault
Using host libthread_db library "/lib64/libthread_db.so.1".
[Current thread is 1 (Thread 0x7fba5eb53840 (LWP 3998))]

Thread 16 (Thread 0x7fba38f38700 (LWP 4001)):
#0  0x00007fba5ce0103f in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007fba5af3434b in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib64/libQt5Core.so.5
#2  0x00007fba5e0b6d60 in Digikam::ScanController::run() () at /opt/kf5/lib64/libdigikamgui.so.5.0.0
#3  0x00007fba5af3332f in  () at /usr/lib64/libQt5Core.so.5
#4  0x00007fba5cdfd0a4 in start_thread () at /lib64/libpthread.so.0
#5  0x00007fba5a62bfed in clone () at /lib64/libc.so.6

Thread 15 (Thread 0x7fba33fff700 (LWP 4005)):
#0  0x00007fba5ce0103f in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007fba5af3434b in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib64/libQt5Core.so.5
#2  0x00007fba5d691ac1 in  () at /opt/kf5/lib64/libdigikamcore.so.5.0.0
#3  0x00007fba5af3332f in  () at /usr/lib64/libQt5Core.so.5
#4  0x00007fba5cdfd0a4 in start_thread () at /lib64/libpthread.so.0
#5  0x00007fba5a62bfed in clone () at /lib64/libc.so.6

Thread 14 (Thread 0x7fba20d0d700 (LWP 4006)):
#0  0x00007fba5ce0103f in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007fba501ad733 in  () at /usr/lib64/libQt5WebKit.so.5
#2  0x00007fba501ad759 in  () at /usr/lib64/libQt5WebKit.so.5
#3  0x00007fba5cdfd0a4 in start_thread () at /lib64/libpthread.so.0
#4  0x00007fba5a62bfed in clone () at /lib64/libc.so.6

Thread 13 (Thread 0x7fb95affd700 (LWP 4044)):
#0  0x00007fba5a623bbd in poll () at /lib64/libc.so.6
#1  0x00007fba51d05e64 in  () at /usr/lib64/libglib-2.0.so.0
#2  0x00007fba51d05f7c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#3  0x00007fba5b165d8b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#4  0x00007fba5b10cd53 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007fba5af2e61a in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#6  0x00007fba5af3332f in  () at /usr/lib64/libQt5Core.so.5
#7  0x00007fba5cdfd0a4 in start_thread () at /lib64/libpthread.so.0
#8  0x00007fba5a62bfed in clone () at /lib64/libc.so.6

Thread 12 (Thread 0x7fb95a7fc700 (LWP 4045)):
#0  0x00007fba5ce0103f in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007fba4feb975d in  () at /usr/lib64/libQt5WebKit.so.5
#2  0x00007fba501dc031 in  () at /usr/lib64/libQt5WebKit.so.5
#3  0x00007fba5cdfd0a4 in start_thread () at /lib64/libpthread.so.0
#4  0x00007fba5a62bfed in clone () at /lib64/libc.so.6

Thread 11 (Thread 0x7fb959ffb700 (LWP 4046)):
#0  0x00007fba5ce0103f in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007fba4feba733 in  () at /usr/lib64/libQt5WebKit.so.5
#2  0x00007fba501dc031 in  () at /usr/lib64/libQt5WebKit.so.5
#3  0x00007fba5cdfd0a4 in start_thread () at /lib64/libpthread.so.0
#4  0x00007fba5a62bfed in clone () at /lib64/libc.so.6

Thread 10 (Thread 0x7fb9597fa700 (LWP 4047)):
#0  0x00007fba5ce0103f in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007fba4feba733 in  () at /usr/lib64/libQt5WebKit.so.5
#2  0x00007fba501dc031 in  () at /usr/lib64/libQt5WebKit.so.5
#3  0x00007fba5cdfd0a4 in start_thread () at /lib64/libpthread.so.0
#4  0x00007fba5a62bfed in clone () at /lib64/libc.so.6

Thread 9 (Thread 0x7fb958ff9700 (LWP 4048)):
#0  0x00007fba5ce0103f in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007fba4feba733 in  () at /usr/lib64/libQt5WebKit.so.5
#2  0x00007fba501dc031 in  () at /usr/lib64/libQt5WebKit.so.5
#3  0x00007fba5cdfd0a4 in start_thread () at /lib64/libpthread.so.0
#4  0x00007fba5a62bfed in clone () at /lib64/libc.so.6

Thread 8 (Thread 0x7fb9bdffb700 (LWP 4297)):
#0  0x00007fba51d05950 in g_main_context_check () at /usr/lib64/libglib-2.0.so.0
#1  0x00007fba51d05df8 in  () at /usr/lib64/libglib-2.0.so.0
#2  0x00007fba51d05f7c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#3  0x00007fba5b165d8b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#4  0x00007fba5b10cd53 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007fba5d6915da in  () at /opt/kf5/lib64/libdigikamcore.so.5.0.0
#6  0x00007fba5af30382 in  () at /usr/lib64/libQt5Core.so.5
#7  0x00007fba5af3332f in  () at /usr/lib64/libQt5Core.so.5
#8  0x00007fba5cdfd0a4 in start_thread () at /lib64/libpthread.so.0
#9  0x00007fba5a62bfed in clone () at /lib64/libc.so.6

Thread 7 (Thread 0x7fb9beffd700 (LWP 4299)):
#0  0x00007fba5a623bbd in poll () at /lib64/libc.so.6
#1  0x00007fba51d05e64 in  () at /usr/lib64/libglib-2.0.so.0
#2  0x00007fba51d05f7c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#3  0x00007fba5b165d8b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#4  0x00007fba5b10cd53 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007fba5d6915da in  () at /opt/kf5/lib64/libdigikamcore.so.5.0.0
#6  0x00007fba5af30382 in  () at /usr/lib64/libQt5Core.so.5
#7  0x00007fba5af3332f in  () at /usr/lib64/libQt5Core.so.5
#8  0x00007fba5cdfd0a4 in start_thread () at /lib64/libpthread.so.0
#9  0x00007fba5a62bfed in clone () at /lib64/libc.so.6

Thread 6 (Thread 0x7fb9bcff9700 (LWP 4300)):
#0  0x00007fba5a623bbd in poll () at /lib64/libc.so.6
#1  0x00007fba51d05e64 in  () at /usr/lib64/libglib-2.0.so.0
#2  0x00007fba51d05f7c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#3  0x00007fba5b165d8b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#4  0x00007fba5b10cd53 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007fba5d6915da in  () at /opt/kf5/lib64/libdigikamcore.so.5.0.0
#6  0x00007fba5af30382 in  () at /usr/lib64/libQt5Core.so.5
#7  0x00007fba5af3332f in  () at /usr/lib64/libQt5Core.so.5
#8  0x00007fba5cdfd0a4 in start_thread () at /lib64/libpthread.so.0
#9  0x00007fba5a62bfed in clone () at /lib64/libc.so.6

Thread 5 (Thread 0x7fb9a4ff9700 (LWP 4301)):
#0  0x00007fba51d47d14 in g_mutex_unlock () at /usr/lib64/libglib-2.0.so.0
#1  0x00007fba51d05a5a in g_main_context_dispatch () at /usr/lib64/libglib-2.0.so.0
#2  0x00007fba51d05ed8 in  () at /usr/lib64/libglib-2.0.so.0
#3  0x00007fba51d05f7c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#4  0x00007fba5b165d8b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007fba5b10cd53 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#6  0x00007fba5d6915da in  () at /opt/kf5/lib64/libdigikamcore.so.5.0.0
#7  0x00007fba5af30382 in  () at /usr/lib64/libQt5Core.so.5
#8  0x00007fba5af3332f in  () at /usr/lib64/libQt5Core.so.5
#9  0x00007fba5cdfd0a4 in start_thread () at /lib64/libpthread.so.0
#10 0x00007fba5a62bfed in clone () at /lib64/libc.so.6

Thread 4 (Thread 0x7fb9de58c700 (LWP 4302)):
#0  0x00007fba51d47cf9 in g_mutex_lock () at /usr/lib64/libglib-2.0.so.0
#1  0x00007fba51d05e16 in  () at /usr/lib64/libglib-2.0.so.0
#2  0x00007fba51d05f7c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#3  0x00007fba5b165d8b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#4  0x00007fba5b10cd53 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007fba5d6915da in  () at /opt/kf5/lib64/libdigikamcore.so.5.0.0
#6  0x00007fba5af30382 in  () at /usr/lib64/libQt5Core.so.5
#7  0x00007fba5af3332f in  () at /usr/lib64/libQt5Core.so.5
#8  0x00007fba5cdfd0a4 in start_thread () at /lib64/libpthread.so.0
#9  0x00007fba5a62bfed in clone () at /lib64/libc.so.6

Thread 3 (Thread 0x7fb9ddd8b700 (LWP 4303)):
#0  0x00007fba5a61fced in write () at /lib64/libc.so.6
#1  0x00007fba5a5ba9d3 in _IO_new_file_write () at /lib64/libc.so.6
#2  0x00007fba5a5ba093 in new_do_write () at /lib64/libc.so.6
#3  0x00007fba5a5bafe6 in __GI__IO_file_xsputn () at /lib64/libc.so.6
#4  0x00007fba5a59236d in buffered_vfprintf () at /lib64/libc.so.6
#5  0x00007fba5a58d36e in vfprintf () at /lib64/libc.so.6
#6  0x00007fba5a63a085 in __fprintf_chk () at /lib64/libc.so.6
#7  0x00007fba5af2544f in  () at /usr/lib64/libQt5Core.so.5
#8  0x00007fba5af21dc3 in qt_message_output(QtMsgType, QMessageLogContext const&, QString const&) () at /usr/lib64/libQt5Core.so.5
#9  0x00007fba5b01efe0 in QDebug::~QDebug() () at /usr/lib64/libQt5Core.so.5
#10 0x00007fba5d44226a in Digikam::BdEngineBackendPrivate::debugOutputFailedQuery(QSqlQuery const&) const () at /opt/kf5/lib64/libdigikamcore.so.5.0.0
#11 0x00007fba5d4428dd in Digikam::BdEngineBackend::queryErrorHandling(Digikam::DbEngineSqlQuery&, int) () at /opt/kf5/lib64/libdigikamcore.so.5.0.0
#12 0x00007fba5d442b25 in Digikam::BdEngineBackend::exec(Digikam::DbEngineSqlQuery&) () at /opt/kf5/lib64/libdigikamcore.so.5.0.0
#13 0x00007fba5d4433c5 in Digikam::BdEngineBackend::execQuery(QString const&, QVariant const&, QVariant const&, QVariant const&, QVariant const&) () at /opt/kf5/lib64/libdigikamcore.so.5.0.0
#14 0x00007fba5d443419 in Digikam::BdEngineBackend::execSql(QString const&, QVariant const&, QVariant const&, QVariant const&, QVariant const&, QList<QVariant>*, QVariant*) () at /opt/kf5/lib64/libdigikamcore.so.5.0.0
#15 0x00007fba5d44a844 in Digikam::ThumbsDb::insertThumbnail(Digikam::ThumbsDbInfo const&, QVariant*) () at /opt/kf5/lib64/libdigikamcore.so.5.0.0
#16 0x00007fba5d67bfc7 in Digikam::ThumbnailCreator::storeInDatabase(Digikam::ThumbnailInfo const&, Digikam::ThumbnailImage const&) const () at /opt/kf5/lib64/libdigikamcore.so.5.0.0
#17 0x00007fba5d67dbc5 in Digikam::ThumbnailCreator::load(Digikam::ThumbnailIdentifier const&, QRect const&, bool) const () at /opt/kf5/lib64/libdigikamcore.so.5.0.0
#18 0x00007fba5d67e0f2 in Digikam::ThumbnailCreator::load(Digikam::ThumbnailIdentifier const&) const () at /opt/kf5/lib64/libdigikamcore.so.5.0.0
#19 0x00007fba5d68b1d6 in  () at /opt/kf5/lib64/libdigikamcore.so.5.0.0
#20 0x00007fba5d66313d in Digikam::LoadSaveThread::run() () at /opt/kf5/lib64/libdigikamcore.so.5.0.0
#21 0x00007fba5d69301e in Digikam::DynamicThread::DynamicThreadPriv::run() () at /opt/kf5/lib64/libdigikamcore.so.5.0.0
#22 0x00007fba5af30382 in  () at /usr/lib64/libQt5Core.so.5
#23 0x00007fba5af3332f in  () at /usr/lib64/libQt5Core.so.5
#24 0x00007fba5cdfd0a4 in start_thread () at /lib64/libpthread.so.0
#25 0x00007fba5a62bfed in clone () at /lib64/libc.so.6

Thread 2 (Thread 0x7fb9dd58a700 (LWP 4304)):
#0  0x00007fba5a627f79 in syscall () at /lib64/libc.so.6
#1  0x00007fba5af2b91c in QBasicMutex::lockInternal() () at /usr/lib64/libQt5Core.so.5
#2  0x00007fba5af2bc41 in QMutex::lock() () at /usr/lib64/libQt5Core.so.5
#3  0x00007fba5d44fee9 in Digikam::ThumbsDbAccess::ThumbsDbAccess() () at /opt/kf5/lib64/libdigikamcore.so.5.0.0
#4  0x00007fba5d67bd3c in Digikam::ThumbnailCreator::storeInDatabase(Digikam::ThumbnailInfo const&, Digikam::ThumbnailImage const&) const () at /opt/kf5/lib64/libdigikamcore.so.5.0.0
#5  0x00007fba5d67dbc5 in Digikam::ThumbnailCreator::load(Digikam::ThumbnailIdentifier const&, QRect const&, bool) const () at /opt/kf5/lib64/libdigikamcore.so.5.0.0
#6  0x00007fba5d67e0f2 in Digikam::ThumbnailCreator::load(Digikam::ThumbnailIdentifier const&) const () at /opt/kf5/lib64/libdigikamcore.so.5.0.0
#7  0x00007fba5d68b1d6 in  () at /opt/kf5/lib64/libdigikamcore.so.5.0.0
#8  0x00007fba5d66313d in Digikam::LoadSaveThread::run() () at /opt/kf5/lib64/libdigikamcore.so.5.0.0
#9  0x00007fba5d69301e in Digikam::DynamicThread::DynamicThreadPriv::run() () at /opt/kf5/lib64/libdigikamcore.so.5.0.0
#10 0x00007fba5af30382 in  () at /usr/lib64/libQt5Core.so.5
#11 0x00007fba5af3332f in  () at /usr/lib64/libQt5Core.so.5
#12 0x00007fba5cdfd0a4 in start_thread () at /lib64/libpthread.so.0
#13 0x00007fba5a62bfed in clone () at /lib64/libc.so.6

Thread 1 (Thread 0x7fba5eb53840 (LWP 3998)):
[KCrash Handler]
#6  0x00007fba5b9c9fa0 in  () at /usr/lib64/libQt5Widgets.so.5
#7  0x00007fba5b9ced7c in QGraphicsProxyWidget::focusNextPrevChild(bool) () at /usr/lib64/libQt5Widgets.so.5
#8  0x00007fba5b9b78d1 in QGraphicsItemPrivate::setVisibleHelper(bool, bool, bool, bool) () at /usr/lib64/libQt5Widgets.so.5
#9  0x00007fba5b9cacd2 in QGraphicsProxyWidget::eventFilter(QObject*, QEvent*) () at /usr/lib64/libQt5Widgets.so.5
#10 0x00007fba5b10f0d3 in QCoreApplicationPrivate::sendThroughObjectEventFilters(QObject*, QEvent*) () at /usr/lib64/libQt5Core.so.5
#11 0x00007fba5b6c7e5c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib64/libQt5Widgets.so.5
#12 0x00007fba5b6cccc8 in QApplication::notify(QObject*, QEvent*) () at /usr/lib64/libQt5Widgets.so.5
#13 0x00007fba5b10ee95 in QCoreApplication::notifyInternal(QObject*, QEvent*) () at /usr/lib64/libQt5Core.so.5
#14 0x00007fba5b7034a8 in QWidgetPrivate::hide_helper() () at /usr/lib64/libQt5Widgets.so.5
#15 0x00007fba5b7079e8 in QWidget::setVisible(bool) () at /usr/lib64/libQt5Widgets.so.5
#16 0x00007fba5b70366b in QWidgetPrivate::close_helper(QWidgetPrivate::CloseMode) () at /usr/lib64/libQt5Widgets.so.5
#17 0x00007fba5b703e2f in QWidget::~QWidget() () at /usr/lib64/libQt5Widgets.so.5
#18 0x00007fba5b703e69 in QWidget::~QWidget() () at /usr/lib64/libQt5Widgets.so.5
#19 0x00007fba5b9c98ca in QGraphicsProxyWidget::~QGraphicsProxyWidget() () at /usr/lib64/libQt5Widgets.so.5
#20 0x00007fba5b9c9909 in QGraphicsProxyWidget::~QGraphicsProxyWidget() () at /usr/lib64/libQt5Widgets.so.5
#21 0x00007fba5d6ff5cf in Digikam::RegionFrameItem::~RegionFrameItem() () at /opt/kf5/lib64/libdigikamcore.so.5.0.0
#22 0x00007fba5e3a53cb in  () at /opt/kf5/lib64/libdigikamgui.so.5.0.0
#23 0x00007fba5e3a460e in  () at /opt/kf5/lib64/libdigikamgui.so.5.0.0
#24 0x00007fba5e190464 in  () at /opt/kf5/lib64/libdigikamgui.so.5.0.0
#25 0x00007fba5e1ae6c5 in  () at /opt/kf5/lib64/libdigikamgui.so.5.0.0
#26 0x00007fba5b13ecc6 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib64/libQt5Core.so.5
#27 0x00007fba5d70076d in Digikam::GraphicsDImgItem::setImage(Digikam::DImg const&) () at /opt/kf5/lib64/libdigikamcore.so.5.0.0
#28 0x00007fba5d6fe45f in Digikam::DImgPreviewItem::slotGotImagePreview(Digikam::LoadingDescription const&, Digikam::DImg const&) () at /opt/kf5/lib64/libdigikamcore.so.5.0.0
#29 0x00007fba5b13fac6 in QObject::event(QEvent*) () at /usr/lib64/libQt5Core.so.5
#30 0x00007fba5b9b0722 in QGraphicsObject::event(QEvent*) () at /usr/lib64/libQt5Widgets.so.5
#31 0x00007fba5b6c7e7c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib64/libQt5Widgets.so.5
#32 0x00007fba5b6cccc8 in QApplication::notify(QObject*, QEvent*) () at /usr/lib64/libQt5Widgets.so.5
#33 0x00007fba5b10ee95 in QCoreApplication::notifyInternal(QObject*, QEvent*) () at /usr/lib64/libQt5Core.so.5
#34 0x00007fba5b111057 in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () at /usr/lib64/libQt5Core.so.5
#35 0x00007fba5b1668f3 in  () at /usr/lib64/libQt5Core.so.5
#36 0x00007fba51d05c84 in g_main_context_dispatch () at /usr/lib64/libglib-2.0.so.0
#37 0x00007fba51d05ed8 in  () at /usr/lib64/libglib-2.0.so.0
#38 0x00007fba51d05f7c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#39 0x00007fba5b165d6c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#40 0x00007fba5b10cd53 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#41 0x00007fba5b1148f6 in QCoreApplication::exec() () at /usr/lib64/libQt5Core.so.5
#42 0x00000000004077c4 in  ()
#43 0x00007fba5a568b05 in __libc_start_main () at /lib64/libc.so.6
#44 0x00000000004082b5 in _start ()

Reported using DrKonqi
Comment 1 caulier.gilles 2016-03-13 14:56:23 UTC 
The backtrace do not give any digiKAm source code relevant.

Please run DK into GDB following instructions here :

https://www.digikam.org/contrib

Gilles Caulier
Comment 2 Maik Qualmann 2016-03-13 15:37:48 UTC 

*** This bug has been marked as a duplicate of bug 359196 ***
Comment 3 caulier.gilles 2019-12-23 06:13:45 UTC 
Problem is fixed with new 7.0.0-beta1 through this long story from this bug

https://bugs.kde.org/show_bug.cgi?id=399923

You can test digiKam 7.0.0-beta1 with bundle available here:

https://download.kde.org/unstable/digikam/

Don't hesitate to give us a fresh feedback about his entry.

Thanks in advance

Gilles Caulier