Update app.py

app.py

@@ -266,12 +266,10 @@ Assistant: Actuellement, je jongle entre plusieurs activités passionnantes !
 
 """
     
-    chat_history.append((prompt, None))
+
+    for response in generate(prompt, chat_history, system_prompt, context_length):
+        chat_history[-1] = (prompt, response)
     yield chat_history
-    
-for response in generate(prompt, chat_history, system_prompt, context_length):
-    chat_history[-1] = (prompt, response)
-yield chat_history
 
 def vote(feedback: str, chat_history):
     if not chat_history: