Update app.py

app.py

@@ -385,7 +385,7 @@ with gr.Blocks(delete_cache=(600, 600)) as demo:
                 with gr.Tab(label="Single Image", id=0) as single_image_input_tab:
                     #image_prompt = gr.Image(label="Image Prompt", format="png", image_mode="RGBA", type="pil", height=300)
                     with gr.Column():    
-                        image_prompt = gr.ImageMask(type="pil", image_mode="RGB", height=512)
+                        image_prompt = gr.ImageMask(type="pil", image_mode="RGB", height=512, value={"background":Image.new("RGB", (512, 512), (255, 255, 255)), "layers":[Image.new("RGB", (512, 512), (255, 255, 255))], "composite":Image.new("RGB", (512, 512), (255, 255, 255))})
                     with gr.Row():
                         sketch_btn = gr.Button("process sketch")
                         generate_btn = gr.Button("Generate 3D")