Gitlab redirecting to the signin page after successful ldap auth?

I have gitlab configured to work with an ldap server but need to switch to a different ldap service. I updated the settings in gitlab.rb and the ldap server shows a successful login. However the browser just redirects to the signin page again. In production.log i see the following.

Processing by Ldap::OmniauthCallbacksController#ldapmain as HTML
  Parameters: {"utf8"=>"βœ“", "authenticity_token"=>"[FILTERED]", "username"=>"user", "password"=>"[FILTERED]"}
Redirected to
Completed 302 Found in 45ms (ActiveRecord: 5.2ms | Elasticsearch: 0.0ms | Allocations: 8497)

Anyone have any ideas on this? i can post additional logs as needed but not sure where to start.
Gitlab version is 13.1 and it’s installed with docker.
Interestingly, i was also working with openid connect and am getting the exact same behavior, successful logins redirecting to sign in.