RGB led over Bluetooth issue

Hi, folks!

This is my first post on the forum, so i hope i can find the solution of my issue.

I was using controlp5 and ketai libraries.

My code:

import ketai.net.bluetooth.*;
import ketai.ui.*;
import ketai.net.*;
import ketai.sensors.*;
import controlP5.*;

KetaiBluetooth bt;
KetaiList klist;
KetaiSensor sensor;

ControlP5 cp5;

ArrayList devicesDiscovered = new ArrayList();

byte[] a={'r'};
byte[] b={'g'};
byte[] c={'b'};

byte redValue = 0;
byte greenValue = 0;
byte blueValue = 0;

void setup()
{
  size(displayWidth,displayHeight);
  orientation(LANDSCAPE);
  background(0);

  
  cp5=new ControlP5(this);


    cp5.addSlider("redValue")
       .setPosition(50, 40)
       .setSize(250, 550)
       .setRange(0.0,255.0)
       ;
       
    cp5.addSlider("greenValue")
       .setPosition(500, 40)
       .setSize(250, 550)
       .setRange(0.0,255.0)
       ;
       
    cp5.addSlider("blueValue")
        .setPosition(950, 40)
        .setSize(250, 550)
        .setRange(0.0,255.0)
        ;
        
  cp5.getController("redValue").getValueLabel().align(ControlP5.RIGHT, ControlP5.TOP).setPaddingY(0);
  cp5.getController("redValue").getCaptionLabel().align(ControlP5.LEFT, ControlP5.BOTTOM).setPaddingY(0);
  cp5.getController("greenValue").getValueLabel().align(ControlP5.RIGHT, ControlP5.TOP).setPaddingY(0);
  cp5.getController("greenValue").getCaptionLabel().align(ControlP5.LEFT, ControlP5.BOTTOM).setPaddingY(0);
  cp5.getController("blueValue").getValueLabel().align(ControlP5.RIGHT, ControlP5.TOP).setPaddingY(0);
  cp5.getController("blueValue").getCaptionLabel().align(ControlP5.LEFT, ControlP5.BOTTOM).setPaddingY(0);
     
 bt=new KetaiBluetooth(this);
  
  bt.start();
  
  klist = new KetaiList(this, bt.getDiscoveredDeviceNames());
  
}

void draw()
{
}

void onKetaiListSelection(KetaiList klist1)
{
  String select = klist1.getSelection();
  bt.connectToDeviceByName(select);
  klist = null;
}

void redValue(byte[] rV)
{
  bt.broadcast(a);
  bt.broadcast(rV);
}

void greenValue(byte[] gV)
{
  bt.broadcast(a);
  bt.broadcast(gV);
}

void blueValue(byte[] bV)
{
  bt.broadcast(a);
  bt.broadcast(bV);
}

And my error :

java.lang.IllegalStateException: Fragment rgb_por{41ca2a10} not attached to Activity at android.app.Fragment.startActivityForResult(Fragment.java:1072) at android.app.Fragment.startActivityForResult(Fragment.java:1063) at ketai.net.bluetooth.KetaiBluetooth.(KetaiBluetooth.java:99) at processing.test.rgb_por.rgb_por.setup(rgb_por.java:82) at processing.core.PApplet.handleDraw(Unknown Source) at processing.core.PGraphicsAndroid2D.requestDraw(Unknown Source) at processing.core.PApplet.run(Unknown Source) at java.lang.Thread.run(Thread.java:841) FATAL EXCEPTION: Animation Thread Process: processing.test.rgb_por, PID: 28464 java.lang.IllegalStateException: Fragment rgb_por{41ca2a10} not attached to Activity at android.app.Fragment.startActivityForResult(Fragment.java:1072) at android.app.Fragment.startActivityForResult(Fragment.java:1063) at ketai.net.bluetooth.KetaiBluetooth.(KetaiBluetooth.java:99) at processing.test.rgb_por.rgb_por.setup(rgb_por.java:82) at processing.core.PApplet.handleDraw(Unknown Source) at processing.core.PGraphicsAndroid2D.requestDraw(Unknown Source) at processing.core.PApplet.run(Unknown Source) at java.lang.Thread.run(Thread.java:841)