diff --git a/src/lib/Others/AlertComp.svelte b/src/lib/Others/AlertComp.svelte
index 33c87def..63339c88 100644
--- a/src/lib/Others/AlertComp.svelte
+++ b/src/lib/Others/AlertComp.svelte
@@ -63,7 +63,7 @@
 
 <svelte:window onmessage={async (e) => {
     if(e.origin.startsWith("https://sv.risuai.xyz") || e.origin.startsWith("http://127.0.0.1") || e.origin === window.location.origin){
-        if(e.data.msg.data.vaild && $alertStore.type === 'login'){
+        if(e.data.msg?.data?.vaild && $alertStore.type === 'login'){
             $alertStore = {
                 type: 'none',
                 msg: JSON.stringify(e.data.msg)