I got problem while I change static product become to firebase database in Flutter

Question

I got problem when try to display product data from firebase. I actually check the connection and got no problem.I got the product data but when try to display product data is not show. what I do mistake?

File FirestoreDB

class FirestoreDB {

  final FirebaseFirestore _firebaseFirestore = FirebaseFirestore.instance;
  
  Stream<List<Product>> getData() {
    return _firebaseFirestore 
    .collection("Product")
    .snapshots()
    .map((snapshot) {
      return snapshot.docs.map((docs) => Product.fromSnapshot(docs)).toList();
    });
  } 
}

File Product

class Product {
  final String image, title, des, catname;
  final int price, star;
  final Color bgColor;

  Product({
    required this.image,
    required this.title,
    required this.des,
    required this.price,
    required this.star,
    required this.catname,
    this.bgColor = const Color(0xFFEFEFF2),
  });



static Product fromSnapshot(DocumentSnapshot snap) {
  Product product = Product(
    image: snap['image'], 
    title: snap['title'], 
    des: snap['des'], 
    price: snap['price'], 
    star: snap['star'], 
    catname: snap['catname']
  );
  return product;
}
}

I debug and check this and I found data from firebase

File Product Controller

class ProductController extends GetxController {

  final product = <Product>[].obs;

  @override
  void onInit() {
    product.bindStream(FirestoreDB().getData());
    super.onInit();
  } 
}

I think this file is my problem

File display List of food

class List_food extends StatelessWidget {
  final cartController = Get.put(CartController());

  final productController = Get.put(ProductController());
  final ProductController pro = Get.find();

  List_food({Key? key}) : super(key: key);
  
  @override
  Widget build(BuildContext context) {
    return Obx(
      () => Container(
        child: ListView(
          scrollDirection: Axis.vertical,
          physics: const ScrollPhysics(),
          shrinkWrap: true,
          children: <Widget>[
            Column(
              children: List.generate(
                  productController.product.length,
                  (index) => Padding(
                        padding: const EdgeInsets.only(top: 15, bottom: 15.0),
                        child: InkWell(
                          onTap: () {
                            Navigator.push(
                                context,
                                MaterialPageRoute(
                                  builder: (context) => DetailsScreen(
                                      product: pro.product[index]),
                                ));
                          },
                          child: Card(
                            child: Row(
                              children: <Widget>[
                                Padding(
                                  padding: const EdgeInsets.only(left: 15.0),
                                  child: Container(
                                    height: 120,
                                    width: 120,
                                    decoration: BoxDecoration(
                                        image: DecorationImage(
                                            image: AssetImage(
                                                pro.product[index].image),
                                            fit: BoxFit.cover)),
                                  ),
                                ),
                                Container(
                                  width: 269,
                                  child: Padding(
                                    padding: const EdgeInsets.only(left: 15.0),
                                    child: Column(
                                      crossAxisAlignment:
                                          CrossAxisAlignment.start,
                                      children: <Widget>[
                                        Text(
                                          pro.product[index].title,
                                          style: const TextStyle(
                                              fontSize: 20,
                                              color: Colors.black),
                                        ),
                                        const SizedBox(
                                          height: 5,
                                        ),
                                        Text(
                                          "Price " +
                                              NumberFormat("#,###").format(
                                                  pro.product[index].price) +
                                              " Bath",
                                          style: const TextStyle(
                                              fontSize: 18,
                                              color:
                                                  Color.fromARGB(117, 0, 0, 0),
                                              fontWeight: FontWeight.w400),
                                        ),
                                        const SizedBox(
                                          width: 20,
                                        ),
                                      ],
                                    ),
                                  ),
                                ),
                                IconButton(
                                  icon: LineIcon(
                                    LineIcons.shoppingCartArrowDown,
                                    size: 30,
                                  ),
                                  onPressed: () {
                                    cartController.addProdust(pro.product[index]);
                                  },
                                ),
                                const SizedBox(
                                  width: 20,
                                ),
                              ],
                            ),
                          ),
                        ),
                      )
                    ),
                  ),
                ], //
              ),
            ),
          );
        }
      }

my full project is this : https://github.com/stm-seek/flutter-error-firebase.git