diff --git a/static/ai-chat.html b/static/ai-chat.html
index 0bf5867..dbde194 100644
--- a/static/ai-chat.html
+++ b/static/ai-chat.html
@@ -149,7 +149,7 @@
      * @returns 回复内容
      */
     function getContent(data) {
-        const match = data.match(contentPattern);
+        const match = data?.match(contentPattern);
         if (match) {
             return match[1];
         } else {