Cant create e-mail account. latest version cyberpanel...

I get this error:

Cannot create email account. Error message: 0,[Errno 2] No such file or directory

I installed minimal version with PowerDNS Enabled.

i went to
:8090/manageservices/managePostfix

to enable the function and rebooted, but i cant create the email account.

is there a root command to enable this?

Thankyou.

resolved.