Update

app.py

@@ -177,7 +177,7 @@ with gr.Blocks(css=css) as demo:
             )
             image_and_mask_examples = gr.Examples(
                 examples=[
-                    Image.open(path).convert("RGB")
+                    Image.open(path).convert("RGBA")
                     for path in Path("./examples/scenes").glob("*.png")
                 ],
                 label="Room examples",