add = document.getElementById("add");
add.addEventListener("click", () => {
    console.log("Updating List......")
    tit = document.getElementById("title").value;
    desc = document.getElementById("description").value;
    if (localStorage.getItem('itemsJson') == null){
        itemJsonArray = [];
        itemJsonArray.push([tit, desc]);
        localStorage.setItem('itemsJson', JSON.stringify(itemJsonArray))
    }
    else{
        itemJsonArrayStr = localStorage.getItem('itemJson')
        itemJsonArray = JSON.parse(itemJsonArrayStr);
        itemJsonArray.push([tit, desc]);
        localStorage.setItem('itemsJson', JSON.stringify(itemJsonArrayStr))
    }
})

main.js:14 Uncaught TypeError: Cannot read properties of null (reading 'push') at HTMLButtonElement. (main.js:14:23)