many important fixes

app/serializers/users/list_serializer.rb

@@ -6,7 +6,7 @@ class Users::ListSerializer
     :is_paid, :price, :closed_at
 
   has_many :users, serializer: Users::UserSerializer
-  has_many(:orders, serializer: Users::OrderSerializer)
+  has_many :orders, serializer: Users::OrderSerializer
   has_many :join_requests, serializer: Users::JoinRequestSerializer
   has_one :supplier, serializer: Users::SupplierSerializer
   has_one :table, serializer: Users::TableSerializer

app/serializers/users/product_order_serializer.rb

@@ -1,6 +1,6 @@
 class Users::ProductOrderSerializer
   include Qwaiter::UserBaseSerializer
   attributes :quantity, :price, :product_name, :product_variant
-  # belongs_to :product #DO NOT USE THIS, THIS IS NOT NEEDED
+  # belongs_to :product #DO NOT USE THIS, THIS IS NOT NEEDED, already included in /tables/:id/supplier
   has_one :order, serializer: Users::OrderSerializer
 end