diff --git a/js/mzta-chatgpt.js b/js/mzta-chatgpt.js
index dd2cebaf..220a8eec 100644
--- a/js/mzta-chatgpt.js
+++ b/js/mzta-chatgpt.js
@@ -89,7 +89,7 @@ function chatgpt_getRegenerateButton() {
 function chatpgt_scrollToBottom () {
     try { 
         //document.querySelector('button[class*="cursor"][class*="bottom"]').click();
-        document.querySelector('path[d^="M12 21C11.7348"]').parentNode.parentNode.click();
+        document.querySelector('path[d^="M12 21C11.7348"]')?.parentNode?.parentNode?.click();
     }
     catch (err) { console.error('[ThunderAI] ', err); }
 }