Update app.py

app.py

@@ -71,7 +71,7 @@ device = torch.device("cuda:0" if torch.cuda.is_available() else "cpu")
 @spaces.GPU(duration=30, queue=False)
 def king(type = "Image Generation",
         input_image = None,
-        instruction: str ,
+        instruction: str = "",
         steps: int = 8,
         randomize_seed: bool = False,
         seed: int = 25,