SUMMARY
***
NOTE: If you are reporting a crash, please try to attach a backtrace with debug symbols.
See https://community.kde.org/Guidelines_and_HOWTOs/Debugging/How_to_create_useful_crash_reports
***


STEPS TO REPRODUCE
1.  Press Open
2.  Select bib file

OBSERVED RESULT

Crash

EXPECTED RESULT

File is opened

SOFTWARE/OS VERSIONS
Linux/KDE Plasma: Debian testing
(available in About System)
KDE Plasma Version: 5.25.4
KDE Frameworks Version: 5.97.0
Qt Version:  5.15.4

ADDITIONAL INFORMATION

gdb /usr/bin/kbibtex
GNU gdb (Debian 12.1-3) 12.1
Copyright (C) 2022 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
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Reading symbols from /usr/bin/kbibtex...
Reading symbols from /usr/lib/debug/.build-id/3a/eec82f880225a40bbf5a0dbf8ea887d846d030.debug...
(gdb) set pagination 0
(gdb) run
Starting program: /usr/bin/kbibtex
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[New Thread 0x7fffe5fff640 (LWP 244474)]
[New Thread 0x7fffe5631640 (LWP 244475)]
[New Thread 0x7fffdcdff640 (LWP 244477)]
[New Thread 0x7fffd15ff640 (LWP 244478)]
[New Thread 0x7fffd0dfe640 (LWP 244479)]
[New Thread 0x7fffc3fff640 (LWP 244480)]
[New Thread 0x7fffc37fe640 (LWP 244481)]
kbibtex.program: Starting KBibTeX version "0.9.90"
QCommandLineParser: option not defined: "author"
QCommandLineParser: option not defined: "license"
QCommandLineParser: option not defined: "desktopfile"
kf.i18n: Trying to convert empty KLocalizedString to QString.
[New Thread 0x7fffbb473640 (LWP 244482)]
[New Thread 0x7fffbac72640 (LWP 244483)]
[New Thread 0x7fffba471640 (LWP 244484)]
[New Thread 0x7fffb9c70640 (LWP 244485)]
kbibtex.program: Located KPart service: "kbibtexpart" with description "KParts component to view and edit bibliographic files" from library "kbibtexpart"
[New Thread 0x7fffb946f640 (LWP 244487)]
kbibtex.io: No or only an incomplete installation of BibUtils found
[New Thread 0x7fff9ffff640 (LWP 244490)]
[Detaching after fork from child process 244491]
kf.kio.filewidgets.kfilefiltercombo: "all/all" is not a valid MIME type
kf.kio.filewidgets.kfilefiltercombo: "all/all" is not a valid MIME type
[Detaching after fork from child process 244493]
[New Thread 0x7fff9f7fe640 (LWP 244502)]
kbibtex.part: Creating KBibTeX Part of version "0.9.90"
kbibtex.io: Using ICU in Encoder class
kbibtex.io: Using ICU in Encoder class

Thread 1 "kbibtex" received signal SIGSEGV, Segmentation fault.
0x00007ffff7bbdbac in FileModel::element (this=0x0, row=0) at ./src/data/models/filemodel.cpp:388
388     ./src/data/models/filemodel.cpp: No such file or directory.
(gdb) bt
#0  0x00007ffff7bbdbac in FileModel::element (this=0x0, row=0) at ./src/data/models/filemodel.cpp:388
#1  0x00007ffff7f1bafd in SortFilterFileModel::filterAcceptsRow (this=0x555557533ca0, source_row=<optimized out>, source_parent=...) at ./src/gui/file/sortfilterfilemodel.cpp:147
#2  0x00007ffff607e6d6 in QSortFilterProxyModelPrivate::create_mapping (this=this@entry=0x5555576016f0, source_parent=...) at itemmodels/qsortfilterproxymodel.cpp:504
#3  0x00007ffff6088504 in QSortFilterProxyModel::setSourceModel (this=0x555557533ca0, sourceModel=<optimized out>) at itemmodels/qsortfilterproxymodel.cpp:2152
#4  0x00007ffff7f1cfe1 in SortFilterFileModel::setSourceModel (this=this@entry=0x555557533ca0, model=0x555557600b40) at ./src/gui/file/sortfilterfilemodel.cpp:39
#5  0x00007fffbbec7c04 in KBibTeXPart::KBibTeXPartPrivate::openFile (this=this@entry=0x5555576186b0, url=..., localFilePath=...) at ./src/parts/part.cpp:385
#6  0x00007fffbbebf7d0 in KBibTeXPart::openFile (this=0x55555751bce0) at ./src/parts/part.cpp:956
#7  0x00007ffff7b21355 in KParts::ReadOnlyPartPrivate::openLocalFile (this=this@entry=0x5555574c8790) at ./src/readonlypart.cpp:180
#8  0x00007ffff7b2241e in KParts::ReadOnlyPart::openUrl (this=0x55555751bce0, url=...) at ./src/readonlypart.cpp:141
#9  0x00005555555ac42f in OpenFileInfo::OpenFileInfoPrivate::createPart (this=0x5555574afc70, newWidgetParent=0x55555592b690, newServicePtr=...) at ./src/program/openfileinfo.cpp:138
#10 0x00005555555aae64 in OpenFileInfo::part (this=this@entry=0x55555751cde0, parent=parent@entry=0x55555592b690, servicePtr=...) at ./src/program/openfileinfo.cpp:262
#11 0x00005555555840ee in MDIWidget::setFile (this=0x55555592b690, openFileInfo=0x55555751cde0, servicePtr=...) at ./src/program/mdiwidget.cpp:255
#12 0x000055555557deab in QtPrivate::FunctorCall<QtPrivate::IndexesList<0, 1>, QtPrivate::List<OpenFileInfo*, QExplicitlySharedDataPointer<KService> >, void, void (MDIWidget::*)(OpenFileInfo*, QExplicitlySharedDataPointer<KService>)>::call (arg=<optimized out>, o=<optimized out>, f=<optimized out>) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:152
#13 QtPrivate::FunctionPointer<void (MDIWidget::*)(OpenFileInfo*, QExplicitlySharedDataPointer<KService>)>::call<QtPrivate::List<OpenFileInfo*, QExplicitlySharedDataPointer<KService> >, void> (arg=<optimized out>, o=<optimized out>, f=<optimized out>) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:185
#14 QtPrivate::QSlotObject<void (MDIWidget::*)(OpenFileInfo*, QExplicitlySharedDataPointer<KService>), QtPrivate::List<OpenFileInfo*, QExplicitlySharedDataPointer<KService> >, void>::impl (which=<optimized out>, this_=<optimized out>, r=<optimized out>, a=<optimized out>, ret=<optimized out>) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:418
#15 0x00007ffff60e89af in QtPrivate::QSlotObjectBase::call (a=0x7fffffffcc20, r=0x55555592b690, this=0x555557293270) at ../../include/QtCore/../../src/corelib/kernel/qobjectdefs_impl.h:398
#16 doActivate<false> (sender=0x555555d7c7f0, signal_index=3, argv=0x7fffffffcc20) at kernel/qobject.cpp:3886
#17 0x00007ffff60e1d6f in QMetaObject::activate (sender=sender@entry=0x555555d7c7f0, m=m@entry=0x5555555c5fe0 <OpenFileInfoManager::staticMetaObject>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x7fffffffcc20) at kernel/qobject.cpp:3946
#18 0x00005555555772a4 in OpenFileInfoManager::currentChanged (this=this@entry=0x555555d7c7f0, _t1=<optimized out>, _t1@entry=0x55555751cde0, _t2=...) at ./obj-x86_64-linux-gnu/src/program/kbibtex_autogen/EWIEGA46WW/moc_openfileinfo.cpp:280
#19 0x00005555555a904c in OpenFileInfoManager::setCurrentFile (this=0x555555d7c7f0, openFileInfo=openFileInfo@entry=0x55555751cde0, servicePtr=...) at ./src/program/openfileinfo.cpp:713
#20 0x0000555555579e36 in KBibTeXMainWindow::openDocument (this=this@entry=0x555555928d20, url=...) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qshareddata.h:183
#21 0x000055555557d763 in KBibTeXMainWindow::openDocumentDialog (this=0x555555928d20) at ./src/program/mainwindow.cpp:338
#22 0x00007ffff60e89af in QtPrivate::QSlotObjectBase::call (a=0x7fffffffcde0, r=0x555555928d20, this=0x555557293150) at ../../include/QtCore/../../src/corelib/kernel/qobjectdefs_impl.h:398
#23 doActivate<false> (sender=0x55555592b690, signal_index=13, argv=0x7fffffffcde0) at kernel/qobject.cpp:3886
#24 0x00007ffff60e89af in QtPrivate::QSlotObjectBase::call (a=0x7fffffffcf00, r=0x55555592b690, this=0x5555557ffaf0) at ../../include/QtCore/../../src/corelib/kernel/qobjectdefs_impl.h:398
#25 doActivate<false> (sender=0x555555cf03c0, signal_index=9, argv=0x7fffffffcf00) at kernel/qobject.cpp:3886
#26 0x00007ffff60e1d6f in QMetaObject::activate (sender=sender@entry=0x555555cf03c0, m=m@entry=0x7ffff727c140 <QAbstractButton::staticMetaObject>, local_signal_index=local_signal_index@entry=2, argv=argv@entry=0x7fffffffcf00) at kernel/qobject.cpp:3946
#27 0x00007ffff6e54c72 in QAbstractButton::clicked (this=this@entry=0x555555cf03c0, _t1=<optimized out>) at .moc/moc_qabstractbutton.cpp:308
#28 0x00007ffff6e54eda in QAbstractButtonPrivate::emitClicked (this=0x5555558f14a0) at widgets/qabstractbutton.cpp:415
#29 0x00007ffff6e56a68 in QAbstractButtonPrivate::click (this=0x5555558f14a0) at widgets/qabstractbutton.cpp:408
#30 0x00007ffff6e56c87 in QAbstractButton::mouseReleaseEvent (this=0x555555cf03c0, e=0x7fffffffd480) at widgets/qabstractbutton.cpp:1044
#31 0x00007ffff6da4cb8 in QWidget::event (this=0x555555cf03c0, event=0x7fffffffd480) at kernel/qwidget.cpp:9033
#32 0x00007ffff6d62f4e in QApplicationPrivate::notify_helper (this=this@entry=0x5555555f7d00, receiver=receiver@entry=0x555555cf03c0, e=e@entry=0x7fffffffd480) at kernel/qapplication.cpp:3637
#33 0x00007ffff6d6b4f2 in QApplication::notify (this=<optimized out>, receiver=0x555555cf03c0, e=<optimized out>) at kernel/qapplication.cpp:3081
#34 0x00007ffff60b1618 in QCoreApplication::notifyInternal2 (receiver=0x555555cf03c0, event=0x7fffffffd480) at kernel/qcoreapplication.cpp:1064
#35 0x00007ffff6d695fe in QApplicationPrivate::sendMouseEvent (receiver=receiver@entry=0x555555cf03c0, event=event@entry=0x7fffffffd480, alienWidget=<optimized out>, nativeWidget=0x555555928d20, buttonDown=buttonDown@entry=0x7ffff72a59f0 <qt_button_down>, lastMouseReceiver=..., spontaneous=true, onlyDispatchEnterLeave=false) at kernel/qapplication.cpp:2619
#36 0x00007ffff6dbdac8 in QWidgetWindow::handleMouseEvent (this=0x55555724cfa0, event=0x7fffffffd730) at kernel/qwidgetwindow.cpp:683
#37 0x00007ffff6dc0e50 in QWidgetWindow::event (this=0x55555724cfa0, event=0x7fffffffd730) at kernel/qwidgetwindow.cpp:300
#38 0x00007ffff6d62f4e in QApplicationPrivate::notify_helper (this=<optimized out>, receiver=0x55555724cfa0, e=0x7fffffffd730) at kernel/qapplication.cpp:3637
#39 0x00007ffff60b1618 in QCoreApplication::notifyInternal2 (receiver=0x55555724cfa0, event=0x7fffffffd730) at kernel/qcoreapplication.cpp:1064
#40 0x00007ffff653d625 in QGuiApplicationPrivate::processMouseEvent (e=0x5555571f3130) at kernel/qguiapplication.cpp:2282
#41 0x00007ffff6511ddc in QWindowSystemInterface::sendWindowSystemEvents (flags=flags@entry=...) at kernel/qwindowsysteminterface.cpp:1169
#42 0x00007fffe6a67e4a in xcbSourceDispatch (source=<optimized out>) at ./src/plugins/platforms/xcb/qxcbeventdispatcher.cpp:105
#43 0x00007fffeb986bc9 in g_main_dispatch (context=0x7fffe0005000) at ../../../glib/gmain.c:3417
#44 g_main_context_dispatch (context=context@entry=0x7fffe0005000) at ../../../glib/gmain.c:4135
#45 0x00007fffeb986e58 in g_main_context_iterate (context=context@entry=0x7fffe0005000, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ../../../glib/gmain.c:4211
#46 0x00007fffeb986eec in g_main_context_iteration (context=0x7fffe0005000, may_block=1) at ../../../glib/gmain.c:4276
#47 0x00007ffff61091c6 in QEventDispatcherGlib::processEvents (this=0x5555556d00a0, flags=...) at kernel/qeventdispatcher_glib.cpp:423
#48 0x00007ffff60b009b in QEventLoop::exec (this=this@entry=0x7fffffffda60, flags=..., flags@entry=...) at ../../include/QtCore/../../src/corelib/global/qflags.h:69
#49 0x00007ffff60b8206 in QCoreApplication::exec () at ../../include/QtCore/../../src/corelib/global/qflags.h:121
#50 0x00007ffff6530fbc in QGuiApplication::exec () at kernel/qguiapplication.cpp:1867
#51 0x00007ffff6d62ec5 in QApplication::exec () at kernel/qapplication.cpp:2829
#52 0x0000555555575fcb in main (argc=<optimized out>, argv=<optimized out>) at ./src/program/program.cpp:124
(gdb)