Application: amarok (2.9.0)

Qt Version: 5.11.0
Frameworks Version: 5.46.0
Operating System: Linux 4.16.11-1-ARCH x86_64
Distribution: "Arch Linux"

-- Information about the crash:
Started Amarok from terminal after login in into plasma, it instantly crashes.

It used to work, but some update seem to have broken it.

The crash can be reproduced every time.

-- Backtrace:
Application: Amarok (amarok), signal: Segmentation fault
Using host libthread_db library "/usr/lib/libthread_db.so.1".
[KCrash Handler]
#6  0x00007fe76a286fc7 in QMetaObject::className() const () at /usr/lib/libQt5Core.so.5
#7  0x00007fe76b24aec0 in  () at /usr/lib/libQt5Widgets.so.5
#8  0x00007fe76b1ebc27 in  () at /usr/lib/libQt5Widgets.so.5
#9  0x00007fe7cc3a710a in call_init.part () at /lib64/ld-linux-x86-64.so.2
#10 0x00007fe7cc3a7206 in _dl_init () at /lib64/ld-linux-x86-64.so.2
#11 0x00007fe7cc3ab273 in dl_open_worker () at /lib64/ld-linux-x86-64.so.2
#12 0x00007fe7c916794f in _dl_catch_exception () at /usr/lib/libc.so.6
#13 0x00007fe7cc3aab48 in _dl_open () at /lib64/ld-linux-x86-64.so.2
#14 0x00007fe7c2c32e66 in  () at /usr/lib/libdl.so.2
#15 0x00007fe7c916794f in _dl_catch_exception () at /usr/lib/libc.so.6
#16 0x00007fe7c91679df in _dl_catch_error () at /usr/lib/libc.so.6
#17 0x00007fe7c2c33597 in  () at /usr/lib/libdl.so.2
#18 0x00007fe7c2c32f06 in dlopen () at /usr/lib/libdl.so.2
#19 0x00007fe7aaaaced1 in  () at /usr/lib/libvlccore.so.9
#20 0x00007fe7aaa1bacf in  () at /usr/lib/libvlccore.so.9
#21 0x00007fe7aaa1b984 in  () at /usr/lib/libvlccore.so.9
#22 0x00007fe7aaa1c047 in  () at /usr/lib/libvlccore.so.9
#23 0x00007fe7aaa1c7fa in  () at /usr/lib/libvlccore.so.9
#24 0x00007fe7aaa0413a in libvlc_InternalInit () at /usr/lib/libvlccore.so.9
#25 0x00007fe7aa7cd67c in libvlc_new () at /usr/lib/libvlc.so.5
#26 0x00007fe7aad45388 in LibVLC::init() () at /usr/lib/kde4/plugins/phonon_backend/phonon_vlc.so
#27 0x00007fe7aad2979b in Phonon::VLC::Backend::Backend(QObject*, QList<QVariant> const&) () at /usr/lib/kde4/plugins/phonon_backend/phonon_vlc.so
#28 0x00007fe7aad2a40d in qt_plugin_instance () at /usr/lib/kde4/plugins/phonon_backend/phonon_vlc.so
#29 0x00007fe7c98ec06c in QPluginLoader::instance() () at /usr/lib/libQtCore.so.4
#30 0x00007fe7abb99c51 in  () at /usr/lib/kde4/plugins/phonon_platform/kde.so
#31 0x00007fe7abb9a573 in  () at /usr/lib/kde4/plugins/phonon_platform/kde.so
#32 0x00007fe7c8b3a6b9 in Phonon::FactoryPrivate::createBackend() () at /usr/lib/libphonon.so.4
#33 0x00007fe7c8b3ba99 in Phonon::Factory::backend(bool) () at /usr/lib/libphonon.so.4
#34 0x00007fe7c8b3c163 in Phonon::Factory::createAudioOutput(QObject*) () at /usr/lib/libphonon.so.4
#35 0x00007fe7c8b2f440 in Phonon::AudioOutputPrivate::createBackendObject() () at /usr/lib/libphonon.so.4
#36 0x00007fe7c8b2c8bc in Phonon::AudioOutputPrivate::init(Phonon::Category) () at /usr/lib/libphonon.so.4
#37 0x00007fe7cbf14e46 in EngineController::initializePhonon() () at /usr/lib/libamaroklib.so.1
#38 0x00007fe7cbf1c5d6 in  () at /usr/lib/libamaroklib.so.1
#39 0x00007fe7c991051d in QMetaMethod::invoke(QObject*, Qt::ConnectionType, QGenericReturnArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument) const () at /usr/lib/libQtCore.so.4
#40 0x00007fe7c9911b94 in QMetaObject::invokeMethod(QObject*, char const*, Qt::ConnectionType, QGenericReturnArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument) () at /usr/lib/libQtCore.so.4
#41 0x00007fe7cbfe6ca3 in  () at /usr/lib/libamaroklib.so.1
#42 0x00007fe7cbfe6cc1 in  () at /usr/lib/libamaroklib.so.1
#43 0x00007fe7cbf0e2c5 in App::continueInit() () at /usr/lib/libamaroklib.so.1
#44 0x00007fe7cbf0f84a in App::App() () at /usr/lib/libamaroklib.so.1
#45 0x00005648eacd5e40 in  ()
#46 0x00007fe7c905706b in __libc_start_main () at /usr/lib/libc.so.6
#47 0x00005648eacd7bba in _start ()

Reported using DrKonqi