Link to "Login" form stopped working


I got a small website running on localhost.
I use the following URL to redirect to KC login page:


everything was working well until I deleted some users in “local” realm.
now I’m getting " 401 Unauthorized" whenever I use the above link.

what I don’t understand is what authorization I need In order to access this URL? - this is just a login form
could it be that since I delete a user before clearing its session this is not working anymore?

I’m running KC 16.1.0 from a local folder (> standalone.bat)
tried to restart the local KC server with no luck

thanks for the help