Update app.py

app.py

@@ -5,7 +5,7 @@ from huggingface_hub import InferenceClient
 client = InferenceClient("mistralai/Mixtral-8x7B-Instruct-v0.1")
 
 def format_prompt(message, history):
-    system_prompt = ("os.getenv("system_prompt")")
+    system_prompt = os.getenv("system_prompt")
     prompt = f"<s>{system_prompt}"
     for user_prompt, bot_response in history:
         prompt += f"[USER] {user_prompt} [/USER]"