ResolutionMost probably expand system user "vzagent0" was disabled in system. You need to ensure that "vzagent0" is allowed to log into system using SSH through localhost.
The following example shows how to check vzagent0 system user.
The authenticity of host 'localhost (127.0.0.1)' can't be established.
RSA key fingerprint is 2c:e1:52:f4:6c:94:ee:2e:ff:b0:14:8e:e6:c5:da:14.
Are you sure you want to continue connecting (yes/no)? yes
Warning: Permanently added 'localhost' (RSA) to the list of known hosts.
Please use a password defined by "ae_password" option in /usr/local/expand/conf/expand.conf configuration file.