Hello i have problem with code but i dont know where is a error. When i add HStack into if-statement error appear, I want compare 2 keys in arrays

my code:

let decoding_ = try! JSONDecoder().decode([String:[Food]].self, from: decoding_url)

struct OrderMenu: View {
     @Binding var an_order_list : [String]

     //@State private var FoodDescription: String
     var body: some View {
         VStack{
             List {
                 ForEach(decoding_.keys, id: \.self){ i in
                     ForEach(decoding_[i]!){ k in
                         ForEach(an_order_list, id: \.self) { a in
                             if a == k.food_menu_id {
                                 HStack {
                                     Text(k.name)
                                     Text(k.alergens)
                                 }
                                 HStack {
                                     Text(k.description)

                                 }
                            }
                        }
                     }
                 }
             }
         }
     }
 }

  struct OrderMenu_Previews: PreviewProvider {

     static var previews: some View {
         OrderMenu(an_order_list: .constant(["Košík je prázdny"]))
     }
 }