Handle customer balance id null on route change exception

src/pages/Customer/Card/CustomerBalance.vue

@@ -122,6 +122,7 @@ onBeforeMount(() => {
 watch(
     () => route.params.id,
     (newValue) => {
+        if (!newValue) return;
         userParams.clientId = newValue;
         filter.where.clientFk = newValue;
         getData();