I configured the auth_saml application to authenticate with gluu server.Everything works fine

but after the users authenticate with the idp,they are redirected back to the odoo 12 login page again.And the url changes to http://myodoourl.com/web/login#action=login&saml_error=expired

I also ot this from the logs; "odoo odoo.addons.auth_saml.controllers.main:                          SAML2: access denied, redirect to main page in case a valid session exists, with                   out setting cookies"