Unable to resolve host for vyos

Seeing following error in vyos 1.2.5 after it got abruptly power off:
while running command /opt/vyatta/bin/sudo-users/vyatta-op-vpn.pl --show-ike-sa-peer=206.80.154.14 it is giving error “unable to resolve host vpn-gw-E131682B-4D85-4148-B104-F8CB2AA059F1”
Seeing some extra special character added in /etc/hosts file
127.0.0.1 localhost debian
::1 localhost ip6-localhost ip6-loopback
fe00::0 ip6-localnet
ff00::0 ip6-mcastprefix
ff02::1 ip6-allnodes
ff02::2 ip6-allrouters
^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@127.0.1.1 vpn-gw-E131682B-4D85-4148-B104-F8CB2AA059F1 #vyatta entry
192.168.4.31 vpn-gw-E131682B-4D85-4148-B104-F8CB2AA059F1.nutanix.com #vyatta entry

@hiteshhapani Try to change your hostname and show /etc/hosts