How to install Zimbra certification?

[rout3rx_blackhat]

I have this error when I want install a commercial SSL in Zimbra

Your certificate was not installed due to the error : system failure: exception executing command: zmcertmgr verifycrtkey comm /opt/zimbra/mailboxd/webapps/zimbraAdmin/tmp/current_comm.key /opt/zimbra/mailboxd/webapps/zimbraAdmin/tmp/current.crt with {RemoteManager: mail.mydomain.com->zimbra@mail.mydomain.com:22}