diff --git a/components/menu/demo/inline.vue b/components/menu/demo/inline.vue
index fcfdbb831..86e600db4 100644
--- a/components/menu/demo/inline.vue
+++ b/components/menu/demo/inline.vue
@@ -86,12 +86,9 @@ export default defineComponent({
     const titleClick = (e: Event) => {
       console.log('titleClick', e);
     };
-    watch(
-      () => openKeys,
-      val => {
-        console.log('openKeys', val);
-      },
-    );
+    watch(openKeys, val => {
+      console.log('openKeys', val);
+    });
     return {
       selectedKeys,
       openKeys,
diff --git a/components/table/hooks/useColumns.tsx b/components/table/hooks/useColumns.tsx
index 8aed4d259..aab022e25 100644
--- a/components/table/hooks/useColumns.tsx
+++ b/components/table/hooks/useColumns.tsx
@@ -37,7 +37,7 @@ function fillSlots<RecordType>(columns: ColumnsType<RecordType>, contextSlots: R
         () => [column.title as any],
       );
     }
-    if ('children' in cloneColumn) {
+    if ('children' in cloneColumn && Array.isArray(cloneColumn.children)) {
       cloneColumn.children = fillSlots(cloneColumn.children, contextSlots);
     }