I’m seeing a lot of warning messages in the error log:

“Warning: Cannot modify header information – headers already sent in?/home1/<redacted>/public_html/staging/wp-content/plugins/another-show-hooks/another-show-hooks.php on line 95

Basically setcookie() should be used before any output.

Uncaught TypeError: Cannot read properties of null (reading 'querySelector')

?

See screenshot below ??

?

edited code

const wrapper = document.querySelector("#ash-dragable-hook-panel");
if (wrapper) {
  const header = wrapper.querySelector(".ash-show-move-window");

  function onDrag({movementX, movementY}){
    let getStyle = window.getComputedStyle(wrapper);
    let leftVal = parseInt(getStyle.left);
    let topVal = parseInt(getStyle.top);
    wrapper.style.left = ${leftVal + movementX}px;
    wrapper.style.top = ${topVal + movementY}px;
  }

  header.addEventListener("mousedown", ()=>{
    header.classList.add("ash_active");
    header.addEventListener("mousemove", onDrag);
  });

  document.addEventListener("mouseup", ()=>{
    header.classList.remove("ash_active");
    header.removeEventListener("mousemove", onDrag);
  });
}

Can I use this to find the hook so I can round up all the prices in the shop?
I want 99.80 and also 99.40 to round up for 100
How can I do it?