CPU, Mem Working Good. VPN Gives Error.

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/usr/local/nagios/libexec/check_vpn.pl -H 192.168.1.1 -c nvbLu3@123 -V LIST_ALL_VPNS

request error: The requested table is empty or does not exist at /usr/local/nagios/libexec/check_vpn.pl line 84
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Line No. 84 is:

$result = $session->get_table(-baseoid => $sonicSAStatPeerGateway);
die “request error: “.$session->error unless (defined $result);