issue while IDM Application SSO

Hi,

I am trying to configure IDM application SSO using SAML authentication. I have done the configuration according to this url-https://www.netiq.com/documentation/identity-manager-48/identity_apps_admin/data/saml-authentication-for-single-sign-on.html but when i click on idmdash url in chrome first its has been authenticated with nam(nidp portal) then its redirected to below error page.