Update app.py

app.py

@@ -300,7 +300,7 @@ with gr.Blocks(css=css, head=head) as demo:
     """)
 
     def on_submit_example(image):
-        on_submit(image, None, None, 'vitl', None, None, -1, True)
+        return on_submit(image, None, None, 'vitl', None, None, -1, True)
     example_files = glob.glob('assets/examples/*')
     examples = gr.Examples(examples=example_files, inputs=[input_image], outputs=[gallery], fn=on_submit_example)