Sad to say systemd failed check_mk is back again :-(

Apr 21 10:04:09 systemd[1]: Got more than one socket.
Apr 21 10:04:09 systemd[1]: check_mk@6265-xx.xx.xx.xx:6556-yy.yy.yy.yy:23706.service failed to run ‘start’ task: Invalid argument
Apr 21 10:04:09 systemd[1]: Failed to start Check_MK.
– Subject: Unit check_mk@6265-xx.xx.xx.xx:6556-yy.yy.yy.yy:23706.service has failed