Update app.py

app.py

@@ -105,7 +105,7 @@ with gr.Blocks() as demo:
         with gr.Column():
             version_gallery = gr.Gallery(label="Versions", type="pil", object_fit='contain', visible=False)
             restore_button = gr.Button("Restore Version", visible=False)
-            clear_button = br.Button('Clear', visible=False)
+            clear_button = gr.Button('Clear', visible=False)
             selected = gr.Number(show_label=False, visible=False)
             
     gr.Examples(