From e8a66adffd6b9e48ba4863107e6fa83332ed582b Mon Sep 17 00:00:00 2001
From: Taosh <taosher@outlook.com>
Date: Wed, 1 Sep 2021 17:49:39 +0800
Subject: [PATCH] fix(components): [el-form-item] dom element null checking
 (#3172)

---
 packages/components/form/src/label-wrap.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/packages/components/form/src/label-wrap.ts b/packages/components/form/src/label-wrap.ts
index 3894176b44..e38a629552 100644
--- a/packages/components/form/src/label-wrap.ts
+++ b/packages/components/form/src/label-wrap.ts
@@ -66,7 +66,7 @@ export default defineComponent({
 
     onBeforeUnmount(() => {
       updateLabelWidth('remove')
-      removeResizeListener(el.value.firstElementChild as ResizableElement, updateLabelWidthFn)
+      removeResizeListener(el.value?.firstElementChild as ResizableElement, updateLabelWidthFn)
     })
 
     function render() {