added text streamer

app.py

@@ -12,4 +12,4 @@ iface = gr.ChatInterface(
 
 if __name__ == "__main__":
     progress=gr.Progress(track_tqdm=True)
-    iface.launch()
+    iface.launch(debug=True)

backend.py

@@ -83,10 +83,11 @@ def handle_query(query_str, chathistory):
         # Execute the query
         streaming_response = query_engine.query(query_str)
         
+        #streaming_response.
         
         # Stream the response
         outputs = []
-        for text in streaming_response.response_gen:
+        for text in streaming_response.async_response_gen:
             
             outputs.append(str(text))
             yield "".join(outputs)