The deployment is on AWS and I do not want to tunnel to the box and open a browser to disable it.
There seems to exist a configuration: \"ssl-required\":\"no
In the "master" realm, over login tab. Change 'Require SSL' property to none.
If you can not access locally to keycloak and it is configured with a database for instance Postgres, then execute the following SQL sentence.
update REALM set ssl_required = 'NONE' where id = 'master';
It is necessary to restart keycloak