Update app.py

app.py

@@ -57,6 +57,7 @@ def function(Textbox,Textbox2,Textbox3):
         #     {"role": "system", "content": content},
         # ]
         if Textbox2:
+            Textbox2 = list(Textbox2)
             chat = openai.ChatCompletion.create(
                 model="gpt-3.5-turbo", messages=list(Textbox2.items())
             )