Warning: require_once(//libraries/legacy/table/category.php): failed to open stream: No such file or directory in /modules/mod_dn/helper.php on line 22

Fatal error: require_once(): Failed opening required '//libraries/legacy/table/category.php' (include_path='.:/:/usr/local/php72/lib/pear') in /modules/mod_dn/helper.php on line 22