Warning: require_once(Archive/Tar.php): failed to open stream: No such file or directory in /var/www/html/compass/includes/php/dhtmlx/grid_to_excel/lib/PHPExcel/Shared/JAMA/docs/download.php on line 30

Fatal error: require_once(): Failed opening required 'Archive/Tar.php' (include_path='.:/usr/share/php') in /var/www/html/compass/includes/php/dhtmlx/grid_to_excel/lib/PHPExcel/Shared/JAMA/docs/download.php on line 30