cis-rest-api/app/Http/Controllers/MembersController.php

<?php

namespace App\Http\Controllers;

use App\Member;
use Illuminate\Http\Request;

class MembersController extends Controller
{
    public function one(Request $request, $id)
    {
        $member = Member::find($id);
        if (!$member)
            return response()
                ->json(["status" => false, "message" => "Member not found"])
                ->setStatusCode(404, "Member not found");

        return response()
            ->json($member, 200);
    }
}