Can use these 2 actions, it will be similar when you want to end the thread.
But in this case, this is a bug with the site. So you can use Fail to give an error message. This action will end the current thread.
Screenshot_4.png
any update on this? would help a lot in the browser can be detached from BAS's interface, like logs, http sniffer.
so it won't be crawded in the same monitor when editing a script.