Update app.py

app.py

@@ -18,7 +18,7 @@ def format_prompt(message, history):
 def generate(
         prompt, history, system_prompt, temperature=0.9, max_new_tokens=256, top_p=0.95, repetition_penalty=1.0, agent=None,
 ):
-    system_prompt=prompts.{agent}
+    system_prompt=prompts.agent
     temperature = float(temperature)
     if temperature < 1e-2:
         temperature = 1e-2