How to use the command kcadm.sh when after successfull login it says HTTPS required in Keycloak?

I am trying also to disable HTTPS, based on a stackoverflow question, an Answer was to

docker exec -it {contaierID} bash
cd keycloak/bin
./kcadm.sh config credentials --server http://localhost:8080/auth --realm master --user admin
./kcadm.sh update realms/master -s sslRequired=NONE

but after executing the third command I am getting the error of HTTPS Required Image

Version 19.0.2 of Keycloak