Upgrade 2.0.2 to 3.1.10 session problem on local mamp

What are your cookie $config settings?

I'm asking about this set of config items.

PHP Code:

$config['cookie_prefix'] 
$config['cookie_domain'] 
$config['cookie_path']
$config['cookie_secure']
$config['cookie_httponly'] 


They must also be set correctly.

You must have permissions and ownership set appropriately for APPPATH.'/sessions'; too.

Here's my settings:

$config['cookie_prefix']    = '';
$config['cookie_domain']    = '';
$config['cookie_path']        = '/';
$config['cookie_secure']    = FALSE;
$config['cookie_httponly']     = FALSE;

I've tried with domain and a lot more different configuration. 
Thanks