Warning: require(../vendor/autoload.php) [function.require]: failed to open stream: No such file or directory in /usr/local/apache/htdocs/index.php on line 3

Fatal error: require() [function.require]: Failed opening required '../vendor/autoload.php' (include_path='.:/usr/lib/php:/usr/local/lib/php') in /usr/local/apache/htdocs/index.php on line 3