error register a new user

[futbolapuesta]

I get my forum error when trying to register a new user, this is the error that gives

"Warning: require_once(includes/functions_vbsfs.php) [function.require-once]: failed to open stream: No such file or directory in [path]/register.php(327) : eval()'d code on line 3

Fatal error: require_once() [function.require]: Failed opening required 'includes/functions_vbsfs.php' (include_path='.:/usr/local/lib/php') in /home/futbaes/domains/futbolapuesta.es/public_html/register.php(327) : eval()'d code on line 3"

please i need help