Laravel Yajra Datatables Sortable not working in relation continue

I have a problem with yajra datatables. I`m following this

http://ift.tt/2pRX9xQ

But not working, if like this.

Example :

$account = People::with(['users.profile.location'])
Datatable::of($account)->make(true);

.....
columns : [
{name: 'users.profile.name', data: 'users.profile.name'},
{name: 'users.profile.location.name', data: 'users.profile.location.name'},
]
....

when I want to sortable location.name I get error in query. "version for the right syntax to use near '.name"

thank.

via Chebli Mohamed