Warning: require(DB_CONFIG_LANG) [function.require]: failed to open stream: No such file or directory in /public_html/index.php on line 12

Warning: require(DB_CONFIG_LANG) [function.require]: failed to open stream: No such file or directory in /public_html/index.php on line 12

Fatal error: require() [function.require]: Failed opening required 'DB_CONFIG_LANG' (include_path='.:/usr/local/lib/php/') in /public_html/index.php on line 12