I want to add a counter symbol or antoher sort of symbol that shows that I have items in my shoppingcart. I have use the shoppingCartIcon from mui icons library. My prject is made in react.

the code for my icon looks like this : `

 <ShoppingCartIcon fontSize="large"></ShoppingCartIcon>`

`I have a function to add items to my shopping cart here :

const addToCart = (itemId) => {
    if (!cartItems[itemId]) {
      setCartItems((prev) => ({ ...prev, [itemId]: 1 }));
    } else {
      setCartItems((prev) => ({ ...prev, [itemId]: prev[itemId] + 1 }));
    }
  };
`

Does it works with this symbol or should i replace it with a image of a shoppingcart instead ?

I have tried to add some sorts of symbol but it dosen´t shown up.
I am really stuck here.