Cart not found: Cannot find cart by ownership when using getCurrentCart API

I'm trying to access the getCurrentCart API in a backend file called "cart.web.js" This is the code in "cart.web.js":

import {Permissions, webMethod} from 'wix-web-module';
import { currentCart } from "wix-ecom-backend";

export const myGetCurrentCartFunction = webMethod(
  Permissions.Anyone,
  async () => {
    try {
      const myCurrentCart = await currentCart.getCurrentCart();
      console.log("Success! Retrieved current cart:", currentCart);
      return myCurrentCart;
    } catch (error) {
      console.error(error);
      // Handle the error
    }
  },
);

As you can see, is the same code suggested in the VELO Docs.

so when I try to run the myGetCurrentCartFunction it returns me an error like the following:

I also added some code to the "CART PAGE" in order to access myGetCurrentCartFunction

import { myGetCurrentCartFunction } from 'backend/cart.web';

$w.onReady(function () {
	const getCurrentCart = async() => {
		const cart = await myGetCurrentCartFunction();
		console.log(cart);
	}
	getCurrentCart();
});

The same error is returned even in the preview mode

Any ideas?