Don't work laravel $request

Ajax response!

Don't work:

$request->input('fio');
$request->fio;

Worked only

$request->all();

But i need to access single values.

Object {
    fio: "Illya Yaremchuk",
    email: "zzzzz@sssss.com",
    _token: "A4bGMcklDoj4VrMzFk0qIKtVlYuX5U9o" }

via Chebli Mohamed