After configuring Zendesk Keyclock Saml SSO Integration User sing-in is getting We are sorry ..Page Not found when directing to keyclock login

Question

I use Keyclocak 23.0.3 SAML SSO with Zendesk , I configured the client setting in the realm and so on The server has : certfication is not valid btw

SAML SSO URL= https://myserver/auth/realms/newrealm/protocol/saml

Certificate fingerprint 38cbcba22bd377ac.....

every time user hit sign-in it redirected to keycloak page but gets Page not found

I saw someone tried to remove auth from the above URL when i do it I got Invalid request !!