const bodyElement = document.querySelector(“body”); bodyElement.addEventListener(“mousemove”, (event) => { const x = event.offsetX; const y = event.offsetY; const spanElement = document.createElement(“span”); spanElement.style.left = x + “px”; spanElement.style.top = y + “px”; bodyElement.appendChild(spanElement); }); browser console showing me this error. inpage.js:200 Uncaught (in promise) TypeError: Cannot read properties of null (reading ‘type’) at Di.<anonymous> (inpage.js:200:122709) at Generator.next […]