Update app.py

app.py

@@ -270,7 +270,7 @@ class LangChain_Document_QA:
 
           txt_msg = txt.submit(self._add_text, [chatbot, txt], [chatbot, txt])
           txt_msg.then(lambda: gr.update(interactive=True), None, [txt])
-          txt.submit(self._suggested_answer,txt,chatbot)
+          txt.submit(self._suggested_answer,txt,txt3)
           button.click(self._agent_text, [chatbot,txt3], chatbot)
           end_btn.click(self._display_history, [], txt4)
           emptyBtn.click(self.clear_func,[],[])