See https://bugs.gentoo.org/966628
PR merged https://github.com/musescore/MuseScore/pull/30422.patch
--- a/src/importexport/midi/internal/midiimport/importmidi_tuplet.cpp
+++ b/src/importexport/midi/internal/midiimport/importmidi_tuplet.cpp
@@ -895,9 +895,9 @@ void addTupletEvents(std::multimap<ReducedFraction, TupletData>& tupletEvents,
                 message += QString::number(tiedTuplet.voice) + ", chord voice = ";
                 message += QString::number(midiChord.voice) + ", bar number (from 1) = ";
                 message += QString::number(midiChord.barIndex + 1);
-#endif
                 Q_ASSERT_X(tiedTuplet.voice == midiChord.voice,
                            "MidiTuplet::addTupletEvents", message.toLatin1().data());
+#endif
 
                 for (int j: tiedTuplet.tiedNoteIndexes) {
                     midiChord.notes[j].tuplet = it;