Getting error after configuring SAML authentication

[ritu Boora]

Hi Team, we have configured SAML authentication for JSM Datacenter. when we are testing, we are getting below error-

We can't log you in right now

Please contact your administrator. Give them this error identifier:

94c5bf19-7bbd-463e-a9cf-ebb952e0cdc8

Below are the logs- 

2023-06-16 13:20:33,920+0300 http-nio-8050-exec-28 ERROR 13402007 800x648751x1 15p98as 103.208.70.37,172.23.12.66 /plugins/servlet/samlconsumer [c.a.p.a.s.web.filter.ErrorHandlingFilter] [UUID: ee2ae90f-3c13-49a6-9acc-19c43f51b767] Received SSO request for user urn:oasis:names:tc:SAML:1.1:nameid-format:unspecified, but the user does not exist
com.atlassian.plugins.authentication.sso.web.usercontext.AuthenticationFailedException: Received SSO request for user urn:oasis:names:tc:SAML:1.1:nameid-format:unspecified, but the user does not exist