Update app.py

app.py

@@ -136,7 +136,8 @@ def messages():
             @sio.event
             def connect():
                 logging.info("Connected to Perplexity AI")
-                sio.emit('perplexity_ask', previous_messages, {
+                sio.emit('perplexity_ask', {
+                    "text": previous_messages,
                     "version": "2.9",
                     "source": "default",
                     "attachments": [],