I think there are 2 problems in your code :

• Firstly, I suppose that each item in your cartitems has the following structure :

  item = { id: 1, name: "my item", price: 2, image: "http://mybeautifulurl.org/image.png" }

If that is the case, you should pass item as the only argument in the map function, and access each props with item.id, item.name, item.price and item.image.

• Some of your code is not in the map function but needs the item, so it cannot display anything.

Here is your updated code :

import React from "react";
import Header from "./Front/Header/Header";

const Cart = ({ cartitems, handleAddProduct, handleRemoveProduct }) => {
  return (
    <>
      <Header />
      <div className="cart-items">
        <div className="cart-items-header"> cartitems</div>
        {!cartitems?.length ? (
          <div className="cart-items-empty"> No items added in cart</div>
        ) : null}
        <div>
          {cartitems?.length
            ? cartitems.map((item) => (
                <>
                  <img
                    key={item.id}
                    className="cart-items-image"
                    src={item.image}
                    alt={item.name}
                  />
                  <div>
                    <h3 className="cart-items-name">{item.name}</h3>
                  </div>
                  <div className="cart-items-function">
                    <button
                      className="cart-items-add"
                      onClick={() => handleAddProduct(item)}
                    >
                      +
                    </button>
                    <button
                      className="cart-items-remove"
                      onClick={() => handleRemoveProduct(item)}
                    >
                      -
                    </button>
                  </div>
                  <div className="cart-items-price">
                    {item.quantity}* ${item.price}
                  </div>
                </>
              ))
            : null}
        </div>
      </div>
    </>
  );
};

export default Cart;

Let me know if this solves the problem :)