Getting error after SAML configuration

[ritu Boora]

Hi Team, we have configured SAML authentication methods on Jira service management datacenter. Bt when we are testing it is giving this error-  

We can't log you in right now

Please contact your administrator. Give them this error identifier:

38293458-e4fa-459b-ac07-47994038d740

Please let me know what is blocking this authentication.

Few of the logs are- 

2023-06-16 10:02:08,673+0300 ContainerBackgroundProcessor[StandardEngine[Catalina]]      HttpSession [zoksne] destroyed for 'IAM-user'
2023-06-16 10:02:08,673+0300 ContainerBackgroundProcessor[StandardEngine[Catalina]]      HttpSession [1ru4hom] destroyed for 'IAM-user'
2023-06-16 10:02:08,673+0300 ContainerBackgroundProcessor[StandardEngine[Catalina]]      HttpSession [pf145x] destroyed for 'IAM-user'
2023-06-16 10:02:08,673+0300 ContainerBackgroundProcessor[StandardEngine[Catalina]]      HttpSession [71e2ld] destroyed for 'IAM-user'
2023-06-16 10:02:08,673+0300 ContainerBackgroundProcessor[StandardEngine[Catalina]]      HttpSession [3k746x] destroyed for 'IAM-user'

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
    at com.atlassian.plugins.authentication.sso.web.saml.SamlConsumerServlet.lambda$doPost$2(SamlConsumerServlet.java:110)