postfix/smtpd: OTP unavailable because can't read/write key database /etc/

[ssbarnea]

After upgrading to 21 my log is spammed with messages like:
postfix/smtpd[40858]   OTP unavailable because can't read/write key database /etc/opiekeys: Permission denied

I should mention that postfix, Enable Rspamd Integration is disabled.

This error does not give any hint regarding what should I do to avoid it.

[mimugmail]

Maybe we need to disable some compile time options. Not critical