[SOLVED] systematic crash with dolphin

Since the last upgrade of kde, dolphin crashes very often with this message:
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[KCrash Handler]
#4 0x00007fa101fe1c85 in ?? () from /usr/lib64/libKF5Solid.so.5
#5 0x00007fa101f9c1a4 in Solid::StorageAccess::filePath() const () from /usr/lib64/libKF5Solid.so.5
#6 0x00007fa102c4fa7e in ?? () from /usr/lib64/libKF5KIOFileWidgets.so.5
#7 0x00007fa102c4fffe in ?? () from /usr/lib64/libKF5KIOFileWidgets.so.5
#8 0x00007fa102c5358f in KFilePlacesModel::closestItem(QUrl const&) const () from /usr/lib64/libKF5KIOFileWidgets.so.5
#9 0x00007fa102c84223 in ?? () from /usr/lib64/libKF5KIOFileWidgets.so.5
#10 0x00007fa102c8c3d4 in ?? () from /usr/lib64/libKF5KIOFileWidgets.so.5
#11 0x00007fa100b21af4 in ?? () from /usr/lib64/libQt5Core.so.5
#12 0x00007fa100a8c265 in QAbstractItemModel::dataChanged(QModelIndex const&, QModelIndex const&, QVector<int> const&) () from /usr/lib64/libQt5Core.so.5
#13 0x00007fa102c538c2 in ?? () from /usr/lib64/libKF5KIOFileWidgets.so.5
#14 0x00007fa100b21af4 in ?? () from /usr/lib64/libQt5Core.so.5
#15 0x00007fa102c500fa in ?? () from /usr/lib64/libKF5KIOFileWidgets.so.5
#16 0x00007fa100b21af4 in ?? () from /usr/lib64/libQt5Core.so.5
#17 0x00007fa101f84924 in Solid::StorageAccess::accessibilityChanged(bool, QString const&) () from /usr/lib64/libKF5Solid.so.5
#18 0x00007fa100b21b28 in ?? () from /usr/lib64/libQt5Core.so.5
#19 0x00007fa101f846c4 in ?? () from /usr/lib64/libKF5Solid.so.5
#20 0x00007fa101fde7a5 in ?? () from /usr/lib64/libKF5Solid.so.5
#21 0x00007fa100b21b28 in ?? () from /usr/lib64/libQt5Core.so.5
#22 0x00007fa100b21b28 in ?? () from /usr/lib64/libQt5Core.so.5
#23 0x00007fa101fcf879 in ?? () from /usr/lib64/libKF5Solid.so.5
#24 0x00007fa101f8eea3 in ?? () from /usr/lib64/libKF5Solid.so.5
#25 0x00007fa101ca708a in ?? () from /usr/lib64/libQt5DBus.so.5
#26 0x00007fa100b17fcc in QObject::event(QEvent*) () from /usr/lib64/libQt5Core.so.5
#27 0x00007fa1016caa8f in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib64/libQt5Widgets.so.5
#28 0x00007fa100aed19a in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /usr/lib64/libQt5Core.so.5
#29 0x00007fa100aefe61 in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () from /usr/lib64/libQt5Core.so.5
#30 0x00007fa100b41f83 in ?? () from /usr/lib64/libQt5Core.so.5
#31 0x00007fa0fcf9ff9b in g_main_context_dispatch () from /usr/lib64/libglib-2.0.so.0
#32 0x00007fa0fcfa0218 in ?? () from /usr/lib64/libglib-2.0.so.0
#33 0x00007fa0fcfa02bf in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#34 0x00007fa100b41660 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt5Core.so.5
#35 0x00007fa100aebd4b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt5Core.so.5
#36 0x00007fa100af393c in QCoreApplication::exec() () from /usr/lib64/libQt5Core.so.5
#37 0x00007fa102e67235 in kdemain () from /usr/lib64/libkdeinit5_dolphin.so
#38 0x00007fa1003451ad in __libc_start_main () from /lib64/libc.so.6
#39 0x000000000040107a in _start ()
[Inferior 1 (process 3279) detached]
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