How to get Shopify cart data using php API?

im trying to create public Shopify App, using Shopify / shopify-app-template-php , im stuck at one place, on how to get current cart data using API.

i have tried code like below,

Routes

Route::get('/api/get-cart-data',       [App\Http\Controllers\FormController::class, 'fetchCart']);

FormController

 $accessToken,
            'X-Shopify-Storefront-Access-Token' => $storePassword,
        ])->get($url);    

        // Debugging statements
        //var_dump($response->status()); // status 200
        //var_dump($response->body());   // response body 11483

        // Check if the request was successful
        if ($response->successful()) {
            // Get the cart data from the response body
            $cartData = $response->json();

            // Return the cart data as a JSON response
            return response()->json($cartData);
        } else {
            // Handle the error case
            $errorMessage = $response->json()['errors'][0] ?? 'Unknown error occurred.';
            return response()->json(['error' => $errorMessage], $response->status());
        }
    }
}

Reactjs Component

import React from 'react';
import { Toast, Form, FormLayout, TextField, Select, Frame } from '@shopify/polaris';
import { useState, useEffect, useCallback } from 'react';
import { Button } from '@shopify/polaris';
import { useAppQuery } from "../hooks";

export function GetCart() {

useEffect(() => {
    const fetchCartData1 = async () => {
      try {
        const response = await fetch('/api/get-cart-data');
        const data = await response.json();
        console.log('Cart data:', data);        
      } catch (error) {
        console.error('Error fetching cart data:', error);
      }
    };

    fetchCartData1();
  }, []);
}

but when i run the code, its gives nothing, when i check with

var_dump($response->status()); gives status 200
var_dump($response->body());   gives response body 11483

and aslo asked for the store password,
below screenshot display the Response of API

please help me with this how can i get current cart details using API?

i have treid code, that i add already in above question

please help me with this, i need help on this issue,
Thanks

tu as trouvé la solution ?