if keys %config_billing;
$config_menu{'Ticketing'} = [ \%config_ticketing, '' ]
if $conf->config('ticket_system')
- && FS::TicketSystem->access_right(\%session, 'ShowConfigTab');
+ && eval { FS::TicketSystem->access_right(\%session, 'ShowConfigTab') };
$config_menu{'Network Monitoring'} = [ \%config_nms, '' ]
if $curuser->access_right('Configure network monitoring')
&& $conf->config('network_monitoring_system') eq 'Torrus_Internal';