尝试获取非对象的属性-Laravel 5.6 MongoDB 4.0

Question

我将laravel 5.6与mongodb 4.0一起使用，当我得到结果时，它显示“正在尝试获取非对象的属性”，我的代码有什么问题？

我的控制器

 $word = $request->get('q');


        $page = \Illuminate\Pagination\Paginator::resolveCurrentPage();
        $perPage = 20;

         $hitung_baris = Dapil_Kotakab::whereRaw(array('$text'=>array('$search'=>   "\"".$word."\"" )))->get();
        $total = $hitung_baris->count();

        $collection = Dapil_Kotakab::raw(function ($collection) use ($word, $page, $perPage){
              array('$text'=>array('$search'=>   "\"".$word."\"" ));
             return $collection->aggregate([
                 [
                    '$lookup' => [
                        'as' => 'KecDetails',
                        'from' => 'src_kecamatan',
                        'foreignField' => 'id',
                        'localField' => 'idKecamatan'
                    ]
                ],
                [
                    '$lookup' => [
                        'as' => 'KotDetails',
                        'from' => 'src_kota_kabupaten',
                        'foreignField' => 'code',
                        'localField' => 'idKota'
                    ]
                ],
                [
                    '$lookup' => [
                        'as' => 'ProvDetails',
                        'from' => 'src_provinsi',
                        'foreignField' => 'idProv',
                        'localField' => 'idProvinsi'
                    ]
                ],
                ['$skip' => ($page - 1) * $perPage],
                ['$limit' => $perPage],
            ]);

    });

        $dapil_kotkab =  new \Illuminate\Pagination\LengthAwarePaginator($collection, $total, $perPage, $page, [
            'path' => \Illuminate\Pagination\Paginator::resolveCurrentPath(),
        ]);

 return  view('dapil_kotakab.dapil_kotkabresult',compact('dapil_kotkab','word'))->with('i',(request()->input('page',1)-1)*20);

我的结果

    <td>{{$dapil_kotakab->ProvDetails[0]->province}}</td>
    <td>{{$dapil_kotakab->KotDetails[0]->regency}}</td>
    <td>{{$dapil_kotakab->KecDetails[0]->name}}</td>

我已经尝试了好几次，但是我总是出错。

  

在这方面的任何建议将不胜感激。