The new child element contains the parent

I'm trying to do a Tic-Tac-Toe game and I have issues when changing the background image to the image of the X or O. I'm taking the <td> cell id with the event listener click on my <td> cell.

This is the creation of my table with all the cells identified and with the images included in all the cells with different ids.

function BuildTable(rows, cols) {
  BuildDivJeu();
  var table = document.createElement("TABLE");
  table.id = "Table";
  document.getElementById("Jeu").appendChild(table);
  for (var row = 1; row <= rows; row++)
  {
    var rangee = document.createElement("TR");
    rangee.id = row;
    document.getElementById("Table").appendChild(rangee);
    for (var col = 1; col <= cols; col++)
    {
      var cellule = document.createElement("TD");
      var img = document.createElement("IMG");
      cellule.id = "R" + row + "C" + col;
      img.setAttribute("id", cellule.id);
      img.setAttribute("src", "Images/VN.png");
      img.setAttribute("alt", "VN")

      cellule.appendChild(img);
      document.getElementById(row).appendChild(cellule);
      cellule.addEventListener("click",Jouer);
    }
  }
}

This is my function that changes the images in the cell depending on which cell is clicked.

function Jouer(){
  var x = event.currentTarget
  var id = x.id;
  var imgx = document.getElementById(id);
  var imgo = document.getElementById(id);
  if (turn % 2 == 0)
  {
    if (x.alt != "VN" | x.alt != "ON")
    {
      if (imgx.hasAttribute("alt"))
      {
        imgx.setAttribute("src", "Images/XN.png");
        imgx.setAttribute("id", "XN");
        imgx.setAttribute("alt", "XN");
      }
      x.appendChild(imgx);
    }
    turn++;
  }
  else
  {
    if (x.id != "VN" | x.id != "XN"){
      if (imgo.hasAttribute("alt")){
        imgo.setAttribute("src", "Images/ON.png");
        imgo.setAttribute("id", "ON");
        imgo.setAttribute("alt", "ON");
      }
    x.appendChild(imgo);
    }
  turn++;
  }
}

When i click on the cell that I want to put my X or O it doesn't work with the error message as the title of this pot mention. I wonder how I could proceed to change the image in the cell with their new ids.