Update app.py

app.py

@@ -202,7 +202,8 @@ class LangChain_Document_QA:
 
         return scores,customer_fig,agent_fig,customer_emotion_fig,agent_emotion_fig
 
-
+    def clear_func(self):
+        history_state.clear()
     def gradio_interface(self):
       with gr.Blocks(css="style.css",theme=gr.themes.Soft()) as demo:
           with gr.Row():
@@ -283,7 +284,8 @@ class LangChain_Document_QA:
               self._agent_text, [chatbot, txt2], chatbot
           )
           end_btn.click(self._display_history, [], txt4)
-
+          clear_btn.click(self.clear_func,[],[])
+          clear_btn.click(lambda: None, None, chatbot, queue=False)
           Sentiment_btn.click(self._on_sentiment_btn_click,[],[txt5,plot,plot_2,plot_3,plot_4])
 
       demo.title = "Vodafone Generative AI CRM ChatBot"