Error message

• Notice: Undefined variable: item_ch_0 in require() (line 240 of /var/www/html/ksa/sites/all/themes/gib/templates/navigation_2.tpl.php).
• Notice: Undefined variable: item_ch_0 in require() (line 243 of /var/www/html/ksa/sites/all/themes/gib/templates/navigation_2.tpl.php).
• Warning: Invalid argument supplied for foreach() in require() (line 243 of /var/www/html/ksa/sites/all/themes/gib/templates/navigation_2.tpl.php).