Miro share project board bookmarklet

Miro-Share-Project-Bookmarklet.js

/* 
 * Code for a bookmarklet to get a shareable link to Miro project
 *
 * installation: use the URL of this Gist on https://www.yourjs.com/bookmarklet/ to add a Bookmarklet to your browser bar.
 *
 * usage: click on the bookmarklet, after opening up a Miro project. 
 *        it will add a link icon (🔗) on the right hand side of the project title (next to the ➕ plus icon)
 *        When you click on the link, a dialog appears that provides you with a URL to share in chats or emails.
 *        Be aware that this might break.
 *
 * last working test: 13th of July 2022
 *
 * authors: Pat Mächler
 * license: CC-0
 * 
 */
let dashboardData = JSON.parse(localStorage["rtb_saved_dashboard"]).tree.dashboard;
let href="https://miro.com/app/dashboard/?spaceId="+dashboardData.currentSpaceId+"&projectId="+dashboardData.currentProject.id;
let link=document.createElement("a");
link.innerText="🔗";
link.href ="#";
link.addEventListener("click",()=>{window.prompt("Copy this link to share this project",href);});
document.getElementsByTagName("project-header")[0].childNodes[0].childNodes[0].appendChild(link);

Great Share, Thanks!
L23 isn't working anymore though: Uncaught TypeError: document.getElementsByTagName(...)[0] is undefined?

document.querySelector('[aria-label="Edit project"]').appendChild(link); does work.
as does
document.querySelector('[aria-label="Edit project"]').parentNode.parentNode.appendChild(link); to have it at the back again.