somebody pls explain this syntax error, tq!

Fatal error: Undefined class name 'sqlutility' in /home/sibu/public_html/cn/modules/system/admin/modulesadmin/modulesadmin.php on line 184
Warning [PHP]: xoops_module_install(/home/sibu/public_html/cn/class/database/sqlutility.php): failed to open stream: No such file or directory in file modules/system/admin/modulesadmin/modulesadmin.php line 181
Warning [PHP]: xoops_module_install(): Failed opening '/home/sibu/public_html/cn/class/database/sqlutility.php' for inclusion (include_path='.:/usr/lib/php:/usr/local/lib/php') in file modules/system/admin/modulesadmin/modulesadmin.php line 181