found out that too,
thank you very much for your support
but i get following issues now:
1)
Failed to execute command 'export PATH=/bin:/sbin:/usr/bin:/usr/sbin:/usr/local/bin:/usr/local/sbin; export LANG=C; hostname --fqdn 2>&1' with exit code '1': hostname: Name or service not known
2)
Failed to execute command 'export PATH=/bin:/sbin:/usr/bin:/usr/sbin:/usr/local/bin:/usr/local/sbin; export LANG=C; systemctl start 'proftpd' 2>&1' with exit code '1': Job for proftpd.service failed because the control process exited with error code. See "systemctl status proftpd.service" and "journalctl -xe" for details.
3)
Failed to execute command 'export PATH=/bin:/sbin:/usr/bin:/usr/sbin:/usr/local/bin:/usr/local/sbin; export LANG=C; ftpwho -v 2>&1' with exit code '1': /run/proftpd.scoreboard: No such file or directory (Perhaps you need to specify the ScoreboardFile with -f, or change the compile-time default directory?)
... after i changed the ip address because it had changed