Virt Server: Certification Error for Custom Root Cert: Caused by: javax.net.ssl.SSLHandshakeExceptio

Hello team - I'm trying to import custom root CA certificate for Virt Server. I have followed all the steps as mentioned. however, still I'm facing the error.

https://support.smartbear.com/virtserver/docs/admin-tasks/custom-ssl-certificates.html

Thanks in advance.

John