Update app.py

app.py

@@ -681,6 +681,7 @@ with gr.Blocks(theme=gr.themes.Soft(), css=css) as demo:
                         sources=['upload', 'clipboard', 'webcam'],
                         transforms=['crop'],
                         crop_size=(opt.width, opt.height),
+                        canvas_size=(opt.width, opt.height),
                         brush=gr.Brush(
                             colors=opt.colors[1:],
                             color_mode="fixed",