Description of problem: I used apper and I have this error: https://bugzilla.redhat.com/show_bug.cgi?id=1177137 Version-Release number of selected component: plasma-systemsettings-5.4.3-1.fc23 Additional info: reporter: libreport-2.6.3 backtrace_rating: 4 cmdline: /usr/bin/systemsettings5 crash_function: KNotification::flags executable: /usr/bin/systemsettings5 global_pid: 21888 kernel: 4.2.6-300.fc23.x86_64 runlevel: N 5 type: CCpp uid: 1000 Truncated backtrace: Thread no. 1 (10 frames) #0 KNotification::flags at ../../src/knotification.cpp:233 #1 NotifyByAudio::onAudioFinished at ../../src/notifybyaudio.cpp:140 #2 NotifyByAudio::qt_static_metacall at moc_notifybyaudio.cpp:83 #3 QMetaObject::activate at kernel/qobject.cpp:3713 #5 Phonon::MediaObject::finished at /usr/src/debug/phonon-4.8.3/x86_64-redhat-linux-gnu-Qt5/phonon/moc_mediaobject.cpp:426 #6 Phonon::MediaObject::qt_static_metacall at /usr/src/debug/phonon-4.8.3/x86_64-redhat-linux-gnu-Qt5/phonon/moc_mediaobject.cpp:183 #7 QObject::event at kernel/qobject.cpp:1239 #8 QApplicationPrivate::notify_helper at kernel/qapplication.cpp:3716 #9 QApplication::notify at kernel/qapplication.cpp:3499 #10 QCoreApplication::notifyInternal at kernel/qcoreapplication.cpp:965 Potential duplicate: bug 1257189
Created attachment 1100602 [details] File: backtrace
Created attachment 1100603 [details] File: cgroup
Created attachment 1100604 [details] File: core_backtrace
Created attachment 1100605 [details] File: dso_list
Created attachment 1100606 [details] File: environ
Created attachment 1100607 [details] File: exploitable
Created attachment 1100608 [details] File: limits
Created attachment 1100609 [details] File: maps
Created attachment 1100610 [details] File: mountinfo
Created attachment 1100611 [details] File: namespaces
Created attachment 1100612 [details] File: open_fds
Created attachment 1100613 [details] File: proc_pid_status
Created attachment 1100614 [details] File: var_log_messages
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Fedora 23 changed to end-of-life (EOL) status on 2016-12-20. Fedora 23 is no longer maintained, which means that it will not receive any further security or bug fix updates. As a result we are closing this bug. If you can reproduce this bug against a currently maintained version of Fedora please feel free to reopen this bug against that version. If you are unable to reopen this bug, please file a new report against the current release. If you experience problems, please add a comment to this bug. Thank you for reporting this bug and we are sorry it could not be fixed.