React gives typeerror even though i made a if statement for if it is not there?

I am making a basic js cart with local storage by default the cart is set to [].

sometimes my code works if i reload the page sometimes it dosent.

it works when it feels like it the error is from name1 where i find a object label that is the same as my param

    const cart = localStorage.getItem('cart')

    const Label = {
        strw: 'Strawberry',
        choc: 'Chocolate',
        van: 'Vanilla'
    }

    function Addtocart(name:string){
        const cartarry = JSON.parse(cart)
        const name1 = cartarry.find((element:any)=> element.label === name)

        if(name === Label.strw && name1 != undefined || null){
            console.log(name1)
            return console.log(name)
        }else if(name === Label.choc && name1 != undefined || null){
            console.log(name1)
            return console.log(name)
        }else if(name === Label.van && name1 != undefined || null){
            console.log(name1)
            return console.log(name)
        }else{

            const template = {
                label: name,
                quantity: 1
            }

            cartarry.push(template)
            return localStorage.setItem('cart',JSON.stringify(cartarry))
        }
    }

    useEffect(()=>{
        if(!cart){
            localStorage.setItem('cart',JSON.stringify([]))
        }
    },[])