Update app.py

app.py

@@ -5,7 +5,7 @@ import os
 
 def call_predict_api(image, private_key=None):
     if private_key != os.environ["password"]:
-        return "Invalid API key. Please check your key and try again.", "Invalid API key"
+        return "Invalid API key. Please check your key and try again."
     # Convert PIL images to base64 string
     src_buffer = BytesIO()
     image.save(src_buffer, format='PNG')