Help me solve this error

Question

const shareButton = document.querySelector('.share-button');
const shareDialog = document.querySelector('.share-dialog');
const closeButton = document.querySelector('.close-button');

shareButton.addEventListener('click', event => {
if (navigator.share) {
navigator.share({
title: 'WebSh',
url: 'https://codepen.io/ayoisaiah/pen/YbNazJ'
}).then(() => {
console.log('Thanks for sharing!');
})
.catch(console.error);
} else {
shareDialog.classList.add('is-open');
}
});

closeButton.addEventListener('click', event => {
shareDialog.classList.remove('is-open');
});

Answer 1

Please save your whole code on SL Playground and link here.
There above is no HTML part.

Answer 2

https://code.sololearn.com/WSGs15Z3a0pf/?ref=app