Laravel检查填充表单的会话超时

in my login form i would like to set check session timeout for filling form, after fill form, i want to check long time, if session expired form must be recreate to fill by user, i'm using this method but i get error:

My code:

public function checkAccount(CheckAuthenticationRequest $request)
{

    if ((time() - Session::activity()) > (Config::get('session.lifetime') * 60))
    {
        return redirect()->back()
            ->withErrors('Login form no longer fill, you must be fill again')
            ->withInput();
    }

    ...
}

Error: for use above code

call_user_func_array() expects parameter 1 to be a valid callback, class 'Illuminate\Session\Store' does not have a method 'activity'

Error: if my form no longer fill by user and try to send form data

TokenMismatchException

The error states that Session doesn't have the method you are calling. Try with Session::get('lastActivityTime')

Implement lastActivityTime by setting the session like so: Session::set('lastActivityTime', time())

You can do something like that.

class formController extends Controller{

    /**FUNCTION THAT RETURNS THE FORM VIEW**/
    public function showForm(Request $request) {
        $request->session()->put("opendate", Carbon::now()); //put current timestamp in the session

        return view("myform");
    }

    /**FUNCTION THAT HANDLES THE FORM DATA**/
    public function public function checkAccount(Request $request){
        if(!$request->session()->has("opendate")) return abort(400);

        $open_date = $request->session()->pull("opendate");

        //check the difference between data in the session and now
        if($opendate->diffInMinutes(Carbon::now()) > 10) //<-- expire minutes here) 
            return redirect()->back()
                            ->withErrors("Login form no longer fill, you must be fill again")
                            ->withInput();

        //success code here
    }

}