Updatable Notify problem

[gentsidis]

Trying the "updatable notifications" example from quasar docs (v2.0.0-beta.12) I get this error:
Uncaught TypeError: false is not a non-null object
the error points to the following line, where the code tries to stop the spinner:

notif({
  icon: 'done', // we add an icon
  spinner: false, // we reset the spinner setting so the icon can be displayed
  message: 'Uploading done!',
  timeout: 2500 // we will timeout it in 2.5s
})

If I remove the spinner: false it does not fire the error, but it also does not work as expected.
Does any one encounter the same problem? Is it a bug? Any ideas on how to fix it?

[metalsadman]

Please make a codepen of what you're trying to do, since just tested it just now and it works as shown in this example https://next.quasar.dev/quasar-plugins/notify#example--updatable.