Sso logout failed


I am struggling to understand how the logout works for OKTA server.

I have not worked on okta and i am trying to isolate the issue.

My SP is ISE and we provided the metadata from ISE ( SP ) to Idp ( okta )

On ISE logs we were getting log out url missing after that we have put the logout url and can see it now however now we get the below error

after successful login when we logout we get


There was a problem to logout from your session. Please contact help desk from assistance.

I will kindly request to help to understand regarding the error.

would be beneficial if you could attach your trace from the browser