Good call, thank you. Got rid of failed request, will retry: 903 (an internal error has occurred).) However, got this instead:
[28/30]: importing IPA certificate profiles Lookup failed: Preferred host ipa-slave01.flora.ltfs.tools does not provide CA. Lookup failed: Preferred host ipa-slave01.flora.ltfs.tools does not provide CA. Failed to import profile 'acmeIPAServerCert': Request failed with status 500: Non-2xx >response from CA REST API: 500. . Running ipa-server-upgrade when installation is >completed may resolve this issue.
And still unable to login via web UI with the same Login failed due to an unknown reason error. I will dig into the logs for more details.