Problem:
If you are already logged in via saml and go to the https://<FQDN>/univention/portal/#/selfservice/profile path to change your profile, you will get an error
An error occurred
2 error(s) occurred
After that you get the profile login window.
If you come from a version earlier than UCS4.4-7 you may be hit by this issue.
Solution:
You have to set the ucr Varaible umc/self-service/allow-authenticated-use to true
~ # ucr search umc/self-service/allow-authenticated-use
umc/self-service/allow-authenticated-use: true
Activates that no new password submission is required, to use the self service "Your profile" module (default value: true).
~ # ucr set umc/self-service/allow-authenticated-use='true'
Bug 56418