Laravel5.3 控制器 save 数据失败

先上代码

//Model（App\CenterSetup.php）
<?php
namespace App;
use Illuminate\Database\Eloquent\Model;
class CenterSetup extends Model
{
    protected $table = 'Centersetup';
}

//控制器（App\Http\Controllers\Admin\CenterSetupController.php）
<?php
namespace App\Http\Controllers\Admin;
use Illuminate\Http\Request;
use App\Http\Controllers\Controller;
use App\CenterSetup;
use Webpatser\Uuid\Uuid;

class CenterSetupController extends Controller
{
    public function Default(){
        $_centersetup=CenterSetup::all();
        foreach ($_centersetup as $a) {
            if ($a->Clientid=='')
            {
                $new=new CenterSetup;
                $new->Clientid=Uuid::generate();
                $new->Centeraddr='http://center.hsppl.me/License';
                $new->Softwareversion = env('Softwareversion', '1.0.0.0');
                $new->Clientname =env('COMPANYNAME', '某某某有限公司');

                if ($new->save()){
                    return '首次创建成功';
                    var_dump($new);
                }else
                {
                    return '首次创建失败！';
                }
            }
        }

        return view('Admin.CenterSetup');
    }
}

执行过程只返回视图，数据表还是空的。
请教各位大神如何解决～