I get this in the logs about About Us page that loads blank and not our text

[23-Jun-2015 03:37:03 America/Chicago] PHP Warning: require(): Filename cannot be empty in /includes/templates/custom/templates/tpl_about_us_default.php on line 23
[23-Jun-2015 03:37:03 America/Chicago] PHP Warning: require(): Filename cannot be empty in /includes/templates/custom/templates/tpl_about_us_default.php on line 23
[23-Jun-2015 03:37:03 America/Chicago] PHP Fatal error: require(): Failed opening required '' (include_path='.:/opt/php53/lib/php') in /includes/templates/custom/templates/tpl_about_us_default.php on line 23


ideas