message: Detect and avoid 404 and 500 error pages
diff: @@ -61,6 +61,9 @@ window.select = select;
  async function init() {
  await safeElementReady('body');
  + if (pageDetect.is404() || pageDetect.is500()) {
  + return;
  + }
  if (document.body.classList.contains('logged-out')) {
  return;
  }
  