Exception: No host give

Hi,someone could help me how to fix this bug .
I’ve already update the freepbx but it still persist… since a day i’ve submited zones without fill the textbox and now i cant fix thi situation.
What could i do?
Exception: No host given in file /var/www/html/admin/modules/firewall/Smart.class.php on line 321

Stack trace:

  1. Exception->() /var/www/html/admin/modules/firewall/Smart.class.php:321

  2. FreePBX\modules\Firewall\Smart->lookup() /var/www/html/admin/modules/firewall/bin/getservices:65