Inside the example /etc/sshd_config an option “PrintLastLog” is included but commented. Commenting it out makes this error appear on service reload:

/etc/ssh/sshd_config line xx: Unsupported option PrintLastLog

SSHD version is:
OpenSSH_8.0p1, OpenSSL 1.1.1c 28 May 2019

(from redmine: issue id 10585, created on 2019-06-18)