尝试加载会话驱动程序Codeigniter 3时出错

I´m trying to load the session driver on CI 3.

O configure the config/autoload.php with this:

$autoload['drivers'] = array('session');

So, I get this error:

A PHP Error was encountered

Severity: Warning

Message: require(/home/admin/web/mysite/public_html/system/libraries/Driver.php): failed to open stream: No such file or directory

Filename: core/Loader.php

Line Number: 699

Session should be loaded in libraries, not drivers.

$autoload['libraries'] = array('session');