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via Oracle Community by 807592, 1 year ago
Requested device not installed: null
via Oracle Community by 807556, 1 year ago
Requested device not installed: null
java.lang.IllegalArgumentException: Requested device not installed: null	at javax.sound.midi.MidiSystem.getGenericDevice(MidiSystem.java:1033)	at javax.sound.midi.MidiSystem.getSequencer(MidiSystem.java:253)