Update app.py

app.py

@@ -123,11 +123,14 @@ def render_message(history):
         </div>
     </div>
     <script>
-        function scrollToBottom() {
+         function scrollToBottom() {
             var chatbox = document.getElementById('chatbox-container');
-            chatbox.scrollTop = chatbox.scrollHeight;
+            chatbox.scrollTop = chatbox.scrollHeight; 
         }
-        scrollToBottom();
+        window.onload = function() {
+            scrollToBottom();  
+        };
+        setTimeout(scrollToBottom, 0);
     </script>
     """