I get this error all the time when trying to make a class, even when I copy code from a program that is working fine. A few posts mention declaring within setup, but no luck so far.  Thanks for any help

MyButton button1, button2, button3;

void setup(){
  size(800,800);


  String image1, image2, image3;
  image1 = "imageBase.JPG";
  image2 = "imageHover.JPG";
  image3 = "imageClick.JPG";
 
  button1 = new MyButton(image1,image2,image3,100,100,100,100);
  button2 = new MyButton(image1,image2,image3,200,200,200,200);
  button3 = new MyButton(image1,image2,image3,400,400,300,300);
}

void draw(){
  button1.update();
  button2.update();
  button3.update();
  if (button1.getter_hovered()){
    println("Button 1 is hovered over.");
  }
  if (button1.getter_clicked()){
    println("Button 1 is clicked.");
  }
}

class MyButton{

  private String _pathBase, _pathHover,  _pathClick;
  private PImage imageBase, imageHover, imageClick, imageCurrent;
  private int locX, locY, sizeX, sizeY;
  private boolean clicked = false, hovered = false;

  //constructor
  MyButton(String _pathBase, String _pathHover, String _pathClick, int _locX, int _locY, int _sizeX, int _sizeY){

    imageBase = loadImage(_pathBase);
    imageHover = loadImage(_pathHover);
    imageClick = loadImage(_pathClick);
    locX = _locX;
    locY = _locY;
    sizeX = _sizeX;
    sizeY = _sizeY;

    //resize the images
    imageBase.resize(sizeX, sizeY);
    imageHover.resize(sizeX, sizeY);
    imageClick.resize(sizeX, sizeY);

    //assign the base image as the current image
    imageCurrent = imageBase;

  }

  void update(){
    //check where the mouse is
    //is it over my button?
    if (!mousePressed && mouseX>=locX && mouseX<=locX+sizeX && mouseY>=locY && mouseY<=locY+sizeY){
      //set the hover image as the current image
      imageCurrent = imageHover;
      hovered = true;
      clicked = false;
    }
    //is it clicking my button?
    else if (mousePressed && mouseX>=locX && mouseX<=locX+sizeX && mouseY>=locY && mouseY<=locY+sizeY){
      //set the clicked image to the current Image
      imageCurrent = imageClick;
      clicked = true;
      hovered = false;
    }
    else{
      imageCurrent = imageBase;
      clicked = false;
      hovered = false;
    }
    //update the onscreen image
    image(imageCurrent,locX,locY);
  }

  boolean getter_clicked(){
    return clicked;
  }

  boolean getter_hovered(){
    return hovered;
  }

} //end class