Warning: require_once(vendor/autoload.php) [function.require-once]: failed to open stream: No such file or directory in /www/production/external_invoicing/Include/phpmailer/test/bootstrap.php on line 2

Fatal error: require_once() [function.require]: Failed opening required 'vendor/autoload.php' (include_path='.:/usr/php-5.2.5/lib/php') in /www/production/external_invoicing/Include/phpmailer/test/bootstrap.php on line 2