Update app.py

app.py

@@ -208,6 +208,10 @@ def run(
 ) -> PIL.Image.Image:
     # Get the composite image from the EditorValue dict
     composite_image = image['composite']
+    
+    if composite_image is None:
+        raise gr.Error("Please provide an input image.")
+    
     width, height = composite_image.size
     
     # Calculate new dimensions to fit within 1024x1024 while maintaining aspect ratio