demo app at https://www.keycloak.org/app/ is broken

[TilliWilli]

Describe the bug

When trying to press Save button JS error occurs.

Version

21.1.0

Expected behavior

Save button works

Actual behavior

nothing happens after Save button have pressed

How to Reproduce?

1. goto https://www.keycloak.org/app/
2. press Save button

Anything else?

it looks like app.js use invalid continuation function

instead of

keycloak.init({
            checkLoginIframe: false
        }).success

it should be

keycloak.init({
            checkLoginIframe: false
        }).then