Update app.py

app.py

@@ -23,7 +23,7 @@ transform_image = transforms.Compose(
 
 @spaces.GPU
 def fn(image):
-    if not image or not image[0]:
+    if image is None or len(image) == 0:
         return image
     im = load_img(image, output_type="pil")
     im = im.convert("RGB")