fix app

app.py

@@ -257,7 +257,7 @@ with gr.Blocks(css=css) as demo:
         )
 
         prompt_in = gr.Textbox(label="Prompt", placeholder="A chihuahua in astronaut suit floating in space, cinematic lighting, glow effect", elem_id="prompt-in")
-        output_size = gr.Radio(["576x1024", "256x256"], value='256x256', label="Output Size", info="576x1024 is watermark-free", elem_id="output-size"),
+        output_size = gr.Radio(["576x1024", "256x256"], label="Output Size", info="576x1024 is watermark-free", elem_id="output-size"),
         submit_btn = gr.Button("Generate")
         video_result = gr.Video(label="Video Output", elem_id="video-output")