Replace error string to user friendly format.
sever@vyos-1.3-roll:~$ show remote-config openvpn vtun0 remote-platform openvpn DEBUG vexit_internal: calling cfgPathExists() without config session calling cfgPathExists() without config session at /opt/vyatta/share/perl5/Vyatta/Config.pm line 83. sever@vyos-1.3-roll:~$ show remote-config openvpn vtun0 remote-platform vyos DEBUG vexit_internal: calling cfgPathExists() without config session calling cfgPathExists() without config session at /opt/vyatta/share/perl5/Vyatta/Config.pm line 83.