Update app.py

app.py

@@ -19,7 +19,7 @@ def format_prompt(message, history):
 
 def chat_inf(system_prompt,prompt,history):
     if not history:
-        history = [(None,None)]
+        history = (None,None)
         
     seed = random.randint(1,1111111111111111)
     generate_kwargs = dict(
@@ -36,7 +36,7 @@ def chat_inf(system_prompt,prompt,history):
     output = ""
     for response in stream:
         output += response.token.text
-        history=[history,(prompt,output)
+        history=[history,(prompt,output)]
         yield history