Update app.py

app.py

@@ -30,7 +30,7 @@ def write_elo_ratings(elo_ratings):
 def format_chatml_prompt(state):
     chatml_prompt = ""
     for message in state["history"]:
-        chatml_prompt += f+message['role']+": "+ message['content']+"\n"
+        chatml_prompt += message['role']+": "+ message['content']+"\n"
     return chatml_prompt
 def get_bot_response(url, prompt,state):
     chatml_prompt = format_chatml_prompt(state)