diff --git a/web/js/index.js b/web/js/index.js
index 5c4d175..147096b 100644
--- a/web/js/index.js
+++ b/web/js/index.js
@@ -140,7 +140,7 @@ async function tryCreateConversationId(trycount = 0) {
   const conversationRes = await fetch('/turing/conversation/create', {
     credentials: 'include',
   }).then(async (res) => {
-    if (res.status === 200 && +res.headers.get('content-length') > 0) {
+    if (res.status === 200 && res.body && !res.body.locked) {
       return await res.json();
     } else {
       return 'error';
diff --git a/web/sw.js b/web/sw.js
index d640657..26680ff 100644
--- a/web/sw.js
+++ b/web/sw.js
@@ -56,7 +56,7 @@ workbox.precaching.precacheAndRoute([
   },
   {
     url: '/web/js/index.js',
-    revision: '2023.05.06',
+    revision: '2023.05.06.11',
   },
   // html
   {