Update app.py

app.py

@@ -4,7 +4,8 @@ import os
 
 # Hugging Face API Token (from secrets)
 API_TOKEN = os.getenv("HF_API_KEY")
-
+if not API_TOKEN:
+    print("Error: API token is missing! Please add it as a secret in Hugging Face Spaces.")
 
 # Model Endpoint
 model = "mistralai/Mixtral-8x7B-Instruct-v0.1"  # Use a working instruct model