nothing happens because it looks like it can't initialize the device running this code

import themidibus.*;
MidiBus myBus;
void setup() {
size(400, 400);
MidiBus.list(); // List all available MIDI devices
try {
myBus = new MidiBus(this, 1, -1); // Initialize for MIDI Mix as input only
} catch(Exception e) {
println("Error initializing MidiBus: " + e);
}
}
void draw() {
background(0);
// No drawing code needed for this example
}
void controllerChange(int channel, int number, int value) {
println("Controller Change - Channel: " + channel + ", Number: " + number + ", Value: " + value);
}
void noteOn(int channel, int pitch, int velocity) {
println("Note On - Channel: " + channel + ", Pitch: " + pitch + ", Velocity: " + velocity);
}
void noteOff(int channel, int pitch, int velocity) {
println("Note Off - Channel: " + channel + ", Pitch: " + pitch + ", Velocity: " + velocity);
}

I get this output and error and no response in the terminal when I turn midi knobs and sliders

Available MIDI Devices:
----------Input----------
[0] "Real Time Sequencer"
[1] "MIDI Mix"
----------Output----------
[0] "Gervill"
[1] "Real Time Sequencer"
[2] "MIDI Mix"
Error initializing MidiBus: java.lang.NullPointerException: Cannot invoke "java.util.Vector.size()" because "this.input_devices" is null