Program received signal SIGSEGV, Segmentation fault.
0x00007ffff7287e68 in QSortFilterProxyModel::parent(QModelIndex const&) const () from /usr/lib/libQt5Core.so.5
(gdb) bt
#0  0x00007ffff7287e68 in QSortFilterProxyModel::parent(QModelIndex const&) const () from /usr/lib/libQt5Core.so.5
#1  0x00007ffff78fbb4b in QTreeView::isIndexHidden(QModelIndex const&) const () from /usr/lib/libQt5Widgets.so.5
#2  0x00007ffff78fcc4f in QTreeView::visualRect(QModelIndex const&) const () from /usr/lib/libQt5Widgets.so.5
#3  0x00007ffff78a312a in ?? () from /usr/lib/libQt5Widgets.so.5
#4  0x00007ffff78a3708 in ?? () from /usr/lib/libQt5Widgets.so.5
#5  0x00007fffeefa2467 in ?? () from /usr/lib/qt/plugins/platforms/libqxcb.so
#6  0x00007fffeefa2b7b in ?? () from /usr/lib/qt/plugins/platforms/libqxcb.so
#7  0x00007fffeefa50d6 in ?? () from /usr/lib/qt/plugins/platforms/libqxcb.so
#8  0x00007fffec9ae4df in ?? () from /usr/lib/libQt5DBus.so.5
#9  0x00007fffec9b067e in ?? () from /usr/lib/libQt5DBus.so.5
#10 0x00007ffff72ec06a in QObject::event(QEvent*) () from /usr/lib/libQt5Core.so.5
#11 0x00007ffff7659c0c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/libQt5Widgets.so.5
#12 0x00007ffff765f050 in QApplication::notify(QObject*, QEvent*) () from /usr/lib/libQt5Widgets.so.5
#13 0x00007ffff72bad1b in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib/libQt5Core.so.5
#14 0x00007ffff72bcd5b in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) ()
   from /usr/lib/libQt5Core.so.5
#15 0x00007ffff7312c83 in ?? () from /usr/lib/libQt5Core.so.5
#16 0x00007ffff57c371d in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#17 0x00007ffff57c3a08 in ?? () from /usr/lib/libglib-2.0.so.0
#18 0x00007ffff57c3abc in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#19 0x00007ffff7313077 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
   from /usr/lib/libQt5Core.so.5
#20 0x00007ffff72b87b2 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQt5Core.so.5
#21 0x00007ffff72c018c in QCoreApplication::exec() () from /usr/lib/libQt5Core.so.5
#22 0x0000000000409d15 in ?? ()
#23 0x00007ffff6567800 in __libc_start_main () from /usr/lib/libc.so.6
#24 0x000000000040a529 in ?? ()