fix category without product

assets/js/parts/main.js

@@ -169,10 +169,13 @@ angular
       }
       $scope.removeAll = function () {
           $scope.categories.forEach(category => {
+              if (category.products && category.products.length) {
+
                   category.products.forEach(product => {
                       product.enabled = false
+                  });
+              }
 
-    })
           });
           $scope.activeSelling = [];
           $scope.regenActiveSellingIds();
@@ -238,6 +241,7 @@ $scope.categories.forEach(category => {
        * @param product
        */
       $scope.expressSell = function (product) {
+          $scope.removeAll();
           $scope.addProduct(product);
           $scope.sendForm();
       };