GDB Backtrace:

Thread 1 "kmidimon" received signal SIGSEGV, Segmentation fault.
0x00007ffff7ed545d in drumstick::ALSA::MidiClient::isOpened (this=0x655e50) at /home/pedro/Projects/drumstick/library/alsa/alsaclient.cpp:300
⚠ warning: Source file is more recent than executable.
300 return !d.isNull() && (d->m_SeqHandle != nullptr);
(gdb) bt
#0 0x00007ffff7ed545d in drumstick::ALSA::MidiClient::isOpened (this=0x655e50) at /home/pedro/Projects/drumstick/library/alsa/alsaclient.cpp:300
#1 0x00007ffff7effbf7 in drumstick::ALSA::Subscription::unsubscribe (this=0x7fffffffcf70, seq=0x655e50)
at /home/pedro/Projects/drumstick/library/alsa/subscription.cpp:530
#2 0x00007ffff7eefa07 in drumstick::ALSA::MidiPort::unsubscribeAll (this=0x659e80) at /home/pedro/Projects/drumstick/library/alsa/alsaport.cpp:900
#3 0x00007ffff7eeec2c in drumstick::ALSA::MidiPort::~MidiPort (this=0x659e80) at /home/pedro/Projects/drumstick/library/alsa/alsaport.cpp:587
#4 0x00007ffff7eeec8c in drumstick::ALSA::MidiPort::~MidiPort (this=0x659e80) at /home/pedro/Projects/drumstick/library/alsa/alsaport.cpp:590
#5 0x00007ffff61ebcda in QObjectPrivate::deleteChildren() () from /home/pedro/Qt/6.11.1/gcc_64/lib/libQt6Core.so.6
#6 0x00007ffff61efe48 in QObject::~QObject() () from /home/pedro/Qt/6.11.1/gcc_64/lib/libQt6Core.so.6
#7 0x000000000045c7fa in SequencerAdaptor::~SequencerAdaptor (this=0x597e60) at /home/pedro/Projects/kmidimon/src/sequenceradaptor.cpp:86
#8 0x000000000045c816 in SequencerAdaptor::~SequencerAdaptor (this=0x597e60) at /home/pedro/Projects/kmidimon/src/sequenceradaptor.cpp:86
#9 0x00007ffff61ebcda in QObjectPrivate::deleteChildren() () from /home/pedro/Qt/6.11.1/gcc_64/lib/libQt6Core.so.6
#10 0x00007ffff77f4368 in QWidget::~QWidget() () from /home/pedro/Qt/6.11.1/gcc_64/lib/libQt6Widgets.so.6
#11 0x0000000000445d0b in KMidimon::~KMidimon (this=0x7fffffffd210) at /home/pedro/Projects/kmidimon/src/kmidimon.cpp:637
#12 0x000000000045a92d in main (argc=1, argv=0x7fffffffd7d8) at /home/pedro/Projects/kmidimon/src/main.cpp:68
(gdb)