Java Script bug. : (

I tried fallowed the code but I am stuck in the bug for now 2 months and I am ready to quit if you can help me that would be assumed as I spend way to much time to find it. I followed the code and by the 1:36 when I add the let li = event.target; let ul = li.parentNode; ul.removedChild(li);

the code don't work. This is all JS code ```const toggleList = document.getElementById('toggleList'); const listDiv = document.querySelector('.list'); const descriptionInput = document.querySelector('input.description'); const descriptionP = document.querySelector('p.description'); const descriptionButton = document.querySelector('button.description'); const addIthemInput = document.querySelector ('.addIthemInput'); const addItemButton = document.querySelector ('.addItemButton'); const removeItemButton = document.querySelector ('.removedItemButton');

     listDiv.addEventListener('mouseover',(event) => {
        if (event.target.tagName == 'LI') {
            let li = event.target;
            let ul = li.parentNode;
            ul.removedChild(li); 

        }
     });

toggleList.addEventListener('click', () => { if (listDiv.style.display == 'none' ) {

    listDiv.style.display = 'block';
    toggleList.textContent = 'Hide list';


} else {
listDiv.style.display = 'none';
toggleList.textContent = 'Show list';
}

});

descriptionButton.addEventListener('click', () => { descriptionP.innerHTML = descriptionInput.value + ':'; descriptionInput.value = ''; });

addItemButton.addEventListener('click', () => { let ul = document.getElementsByTagName('ul')[0]; let li = document.createElement('li'); li.textContent = addIthemInput.value; ul.appendChild(li); addIthemInput.value = ''; });

removeItemButton.addEventListener('click', () => { let ul = document.getElementsByTagName('ul')[0]; let li = document.querySelector('li:last-child'); ul.removeChild(li);

});