Update app.py

app.py

@@ -189,5 +189,5 @@ with gr.Blocks(css=css) as app:
     
     im_btn.click(load_im,inp_im,outp)
     go_btn = btn.click(run_dif,[inp,outp,model_drop,cnt],[fingal,out_html])
-    stop_btn.click(None,None,None,cancels='go_btn')
+    stop_btn.click(None,None,None,cancels=['go_btn'])
 app.queue().launch()