Error message

• Notice: Undefined property: stdClass::$field_field_network in include() (line 44 of sites/all/themes/tfn/templates/calendar-item.tpl.php).
• Notice: Undefined property: stdClass::$field_field_network in include() (line 44 of sites/all/themes/tfn/templates/calendar-item.tpl.php).
• Notice: Undefined property: stdClass::$field_field_network in include() (line 44 of sites/all/themes/tfn/templates/calendar-item.tpl.php).