title: Codeigniter 3 session doesn't work
body: <p>I am new in CI and I just started building login system, using codeigniter 3. My test project is based on live server. When I autoload session library in in autoload.php and put an encryption key in config.php it shows me an error in browser. The error is  "The requested URL could not be delivered".
  When session library is of, everything works.I think it might be the configuration of apache web server, beacouse in the local server exactly the same project works with sessions.
  session autoloading:
   I will appreciate any advice that might help to solve this issue and  to use sessions. Thanks in advance!</p>