Why does the Postfix error occur?

Question

linux

Hello! Please tell me why these errors occur:

Jul 26 12:12:40 vm-69283c2b postfix/smtpd[17450]: error: open /etc/postfix/mysql-virtual-alias-maps.cf: No such file or directory
Jul 26 12:12:40 vm-69283c2b postfix/smtpd[17450]: error: open /etc/postfix/mysql-virtual-email2email.cf: No such file or directory
Jul 26 12:12:42 vm-69283c2b postfix/trivial-rewrite[17453]: error: open /etc/postfix/mysql-virtual-alias-maps.cf: No such file or directory
Jul 26 12:12:42 vm-69283c2b postfix/trivial-rewrite[17453]: error: open /etc/postfix/mysql-virtual-email2email.cf: No such file or directory
Jul 26 12:14:29 vm-69283c2b postfix/smtpd[17640]: error: open /etc/postfix/mysql-virtual-alias-maps.cf: No such file or directory
Jul 26 12:14:29 vm-69283c2b postfix/smtpd[17640]: error: open /etc/postfix/mysql-virtual-email2email.cf: No such file or directory

There are files on the given paths. Owner root, rights 640

Answer 1

No such file or directory - No such file or directory!

Answer 2

rights 640 what are they talking about? that read permissions will only be available to the owner and the group.
Either change the owner to postfix or add read permissions to the files.