Looks like i found the problem:
/etc/logrotate.d/ufw was malformed
/var/log.hdd/ufw.log
{
rotate 4
weekly
maxsize2M #(NOT OK! deleted this line)
maxsize 2M #(and ALIGN LIKE THIS)
missingok
notifempty
compress
delaycompress
sharedscripts
postrotate
invoke-rc.d rsyslog rotate >/dev/null 2>&1 || true
endscript
}
save the file and restart logrotate.service
logrotate.service stops failling now