bug修改

src/views/plan/order/index.vue

@@ -456,7 +456,7 @@ option.value = {
         }
       },
       change: ({ value, column }) => {
-        if (value != form.value.materialCode) {
+        if (value != form.value.materialCode && value) {
           dialog1.visible = true;
         }
       },