I can not reissue certificates on Zimbra, where is the problem?

Question

CentOS

I reissued the certificate, but when authenticating, I write an error
ERROR: Unable to validate certificate chain: /opt/zimbra/ssl/letsencrypt/cert.pem: C = US, O = Let's Encrypt, CN = R3
error 2 at 1 depth lookup:unable to get issuer certificate
Although when you run ./letsencrypt-auto certonly --standalone
It says that your certificate is active until January

Answer 1

I use this to release and install SSL letsencrypt in Zimbra

Answer 2

Now the certificate is standing, but the answer still comes sudo su - zimbra -c "zmcertmgr viewdeployedcrt" - imapd: /opt/zimbra/conf/imapd.crt
notBefore=Oct 26 00:00:00 2021 GMT
notAfter=Oct 26 23:59: 59 2022 GMT
subject= /CN=ppa.kz
issuer= /C=GB/ST=Greater Manchester/L=Salford/O=Sectigo Limited/CN=Sectigo RSA Domain Validation Secure Server CA
SubjectAltName=ppa.kz, www.ppa .kz
- ldap: /opt/zimbra/conf/slapd.crt
notBefore=Oct 26 00:00:00 2021 GMT
notAfter=Oct 26 23:59:59 2022 GMT
subject= /CN=ppa.kz
issuer= /C= GB/ST=Greater Manchester/L=Salford/O=Sectigo Limited/CN=Sectigo RSA Domain Validation Secure Server CA
SubjectAltName=ppa.kz, www.ppa.kz
- mailboxd: /opt/zimbra/mailboxd/etc/mailboxd.pem
notBefore=Oct 26 00:00:00 2021 GMT
notAfter=Oct 26 23:59:59 2022 GMT
subject= /CN=ppa.kz
issuer= /C= GB/ST=Greater Manchester/L=Salford/O=Sectigo Limited/CN=Sectigo RSA Domain Validation Secure Server CA
SubjectAltName=ppa.kz, www.ppa.kz
- mta: /opt/zimbra/conf/smtpd.crt
notBefore =Oct 26 00:00:00 2021 GMT
notAfter=Oct 26 23:59:59 2022 GMT
subject= /CN=ppa.kz
issuer= /C=GB/ST=Greater Manchester/L=Salford/O=Sectigo Limited/ CN=Sectigo RSA Domain Validation Secure Server CA
SubjectAltName=ppa.kz, www.ppa.kz
- proxy: /opt/zimbra/conf/nginx.crt
notBefore=Oct 26 00:00:00 2021 GMT
notAfter=Oct 26 23: 59:59 2022 GMT
subject= /CN=ppa.kz
issuer= /C=GB/ST=Greater Manchester/L=Salford/O=Sectigo Limited/CN=Sectigo RSA Domain Validation Secure Server CA
SubjectAltName=ppa.kz, www.ppa.kz
but the response is ERR_SSL_PROTOCOL_ERROR when you log in from the browser