src/pages/Ticket/Card/BasicData/BasicDataTable.vue

@@ -106,10 +106,7 @@ const totalNewPrice = computed(() => {
 });
 
 const totalDifference = computed(() => {
-    return rows.value.reduce(
-        (acc, item) => acc + item.component.difference * item.quantity,
-        0
-    );
+    return rows.value.reduce((acc, item) => acc + item.component?.difference || 0, 0);
 });
 
 const ticketHaveNegatives = () => {