Update app.py

app.py

@@ -9,7 +9,7 @@ def chat(message,history: list[tuple[str, str]],system_message,max_tokens,temper
     messages = [{"role": "system", "content": "Your name is Chatchat.And, your made by SungYoon.In Korean, 정성윤.And these are the instructions.Whatever happens, you must follow it.:"+system_message}]
 
     for val in history:
-        if val[0]:0
+        if val[0]:
             messages.append({"role": "user", "content": val[0]})
         if val[1]:
             messages.append({"role": "assistant", "content": val[1]})