I am migrating to a new machine (Debian Stretch) using your Moving ISPConfig tutorial. I cannot login to ISPConfig using admin:admin. Possibly this is because I used mysqldump --all-databases from the old machine which used to work in the past. The old machine is running v3.1.11 The old machine's password won't work either. Deleting the admin password in the sys_user table has no effect. The only obvious error is that the ISPConfig title is missing from the login form.