Hello, thanks for your answers!
I did what they mention in this link Self Signed SSL Issue · josephgodwinkimani/cyberpanel Wiki · GitHub
The problem that tells me that I have more than 5 certificates requested and I must wait more than 25 hours to try to download it again
before i ran the postmap commands -F hash:/etc/postfix/vmail_ssl.map systemctl restart dovecot && systemctl restart postfix successfully
