Update app.py

app.py

@@ -104,7 +104,7 @@ def generate(prompt, history, agent_name=agents[0], sys_prompt="", temperature=0
         
         prompt = question_generate(output, history)
         #output += prompt
-        history.append(prompt,output)
+        history.append((prompt,output))
         print ( f'Prompt:: {prompt}')
         print ( f'output:: {output}')
         print ( f'history:: {history}')