Description of problem:
Per https://bugzilla.redhat.com/show_bug.cgi?id=2378661#c0, I invoked this application from an SSH client on postmarketOS. The cause of the problem appears to be that $DISPLAY is unset. It solely appears to affect Qt-based applications (not merely KDE Frameworks-based ones). However, it doesn't affect all, for VLC copes fine. (Likewise, the GTK3-based Chromium and Inkscape cope.)

Version-Release number of selected component:
skanpage-25.04.3-1.fc42

Additional info:
reporter:       libreport-2.17.15
type:           CCpp
reason:         skanpage killed by SIGABRT
journald_cursor: s=c1f108f1ef4e48808a377c0a73f168fc;i=864d27;b=9a2a7e1fe91e4e5bb9e946b734c27a2b;m=1f4a77a59;t=6396dcec228e1;x=250908e38369f104
executable:     /usr/bin/skanpage
cmdline:        skanpage
cgroup:         0::/user.slice/user-1000.slice/session-4.scope
rootdir:        /
uid:            1000
kernel:         6.15.4-200.fc42.x86_64
package:        skanpage-25.04.3-1.fc42
runlevel:       N 5
backtrace_rating: 4
crash_function: qAbort
comment:        Per https://bugzilla.redhat.com/show_bug.cgi?id=2378661#c0, I invoked this application from an SSH client on postmarketOS. The cause of the problem appears to be that $DISPLAY is unset. It solely appears to affect Qt-based applications (not merely KDE Frameworks-based ones). However, it doesn't affect all, for VLC copes fine. (Likewise, the GTK3-based Chromium and Inkscape cope.)

Truncated backtrace:
Thread no. 1 (11 frames)
 #4 qAbort at /usr/src/debug/qt6-qtbase-6.9.1-1.fc42.x86_64/src/corelib/global/qassert.cpp:46
 #5 qt_message_fatal<QString&> at /usr/src/debug/qt6-qtbase-6.9.1-1.fc42.x86_64/src/corelib/global/qlogging.cpp:2122
 #6 qt_message(QtMsgType, const QMessageLogContext &, const char *, typedef __va_list_tag __va_list_tag *) at /usr/src/debug/qt6-qtbase-6.9.1-1.fc42.x86_64/src/corelib/global/qlogging.cpp:381
 #7 QMessageLogger::fatal at /usr/src/debug/qt6-qtbase-6.9.1-1.fc42.x86_64/src/corelib/global/qlogging.cpp:883
 #8 init_platform at /usr/src/debug/qt6-qtbase-6.9.1-1.fc42.x86_64/src/gui/kernel/qguiapplication.cpp:1345
 #9 QGuiApplicationPrivate::createPlatformIntegration at /usr/src/debug/qt6-qtbase-6.9.1-1.fc42.x86_64/src/gui/kernel/qguiapplication.cpp:1591
 #10 QGuiApplicationPrivate::createEventDispatcher at /usr/src/debug/qt6-qtbase-6.9.1-1.fc42.x86_64/src/gui/kernel/qguiapplication.cpp:1610
 #11 QCoreApplicationPrivate::init at /usr/src/debug/qt6-qtbase-6.9.1-1.fc42.x86_64/src/corelib/kernel/qcoreapplication.cpp:866
 #12 QGuiApplicationPrivate::init at /usr/src/debug/qt6-qtbase-6.9.1-1.fc42.x86_64/src/gui/kernel/qguiapplication.cpp:1638
 #13 QApplicationPrivate::init at /usr/src/debug/qt6-qtbase-6.9.1-1.fc42.x86_64/src/widgets/kernel/qapplication.cpp:476
 #14 QApplication::QApplication at /usr/src/debug/qt6-qtbase-6.9.1-1.fc42.x86_64/src/widgets/kernel/qapplication.cpp:464