post request using crud crud in react js

Question

Trying post request in crud crud dynamically using fetch api but its showing error net::ERR_ABORTED 415 (Unsupported Media Type)

const addItemToCartHandler = async (item) => {
 const data = {
      id: item.id,
      price: item.price,
      title: item.title,
    };

    const response = await fetch(
      `https://crudcrud.com/api/48b546b22bf645d89b3f91c1f04f7cdd/cart${authCtx.idToken}`,
      {
        body: JSON.stringify(data),
        method:'POST',
        headers: {
          "Content-type": "application/json",
        },
        mode: "no-cors",
      }
    );
    if (response.ok) {
      console.log(response);
    }
}