ErrorException In CompanyController.php line 93 :

  Attempt to read property "site" on null

#0 vendor/laravel/framework/src/Illuminate/Foundation/Bootstrap/HandleExceptions.php(255): Illuminate/Foundation/Bootstrap/HandleExceptions->handleError()
#1 app/Company/Controllers/CompanyController.php(93): Illuminate/Foundation/Bootstrap/HandleExceptions->Illuminate/Foundation/Bootstrap/{closure}()
#2 [internal function]: App/Company/Controllers/CompanyController->App/Company/Controllers/{closure}()
#3 vendor/dcat/laravel-admin/src/Grid.php(511): call_user_func()
#4 vendor/dcat/laravel-admin/src/Grid/Concerns/HasFilter.php(38): Dcat/Admin/Grid->callBuilder()
#5 vendor/dcat/laravel-admin/src/Grid.php(487): Dcat/Admin/Grid->processFilter()
#6 vendor/dcat/laravel-admin/src/Grid.php(1008): Dcat/Admin/Grid->build()
#7 vendor/dcat/laravel-admin/src/Grid.php(1100): Dcat/Admin/Grid->render()
#8 vendor/dcat/laravel-admin/src/Support/Helper.php(107): Dcat/Admin/Grid->__toString()
#9 vendor/dcat/laravel-admin/src/Layout/Column.php(105): Dcat/Admin/Support/Helper::render()
#10 vendor/dcat/laravel-admin/src/Layout/Row.php(74): Dcat/Admin/Layout/Column->render()
#11 vendor/dcat/laravel-admin/src/Layout/Content.php(271): Dcat/Admin/Layout/Row->render()
#12 vendor/dcat/laravel-admin/src/Layout/Content.php(516): Dcat/Admin/Layout/Content->build()
#13 vendor/laravel/framework/src/Illuminate/Http/Response.php(69): Dcat/Admin/Layout/Content->render()
#14 vendor/laravel/framework/src/Illuminate/Http/Response.php(35): Illuminate/Http/Response->setContent()
#15 vendor/laravel/framework/src/Illuminate/Routing/Router.php(918): Illuminate/Http/Response->__construct()
#16 vendor/laravel/framework/src/Illuminate/Routing/Router.php(885): Illuminate/Routing/Router::toResponse()
#17 vendor/laravel/framework/src/Illuminate/Routing/Router.php(805): Illuminate/Routing/Router->prepareResponse()
#18 vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(144): Illuminate/Routing/Router->Illuminate/Routing/{closure}()
#19 vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(119): Illuminate/Pipeline/Pipeline->Illuminate/Pipeline/{closure}()
#20 vendor/laravel/framework/src/Illuminate/Routing/Router.php(805): Illuminate/Pipeline/Pipeline->then()
#21 vendor/laravel/framework/src/Illuminate/Routing/Router.php(784): Illuminate/Routing/Router->runRouteWithinStack()
#22 vendor/laravel/framework/src/Illuminate/Routing/Router.php(748): Illuminate/Routing/Router->runRoute()
#23 vendor/laravel/framework/src/Illuminate/Routing/Router.php(737): Illuminate/Routing/Router->dispatchToRoute()
#24 vendor/laravel/framework/src/Illuminate/Foundation/Http/Kernel.php(200): Illuminate/Routing/Router->dispatch()
#25 vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(144): Illuminate/Foundation/Http/Kernel->Illuminate/Foundation/Http/{closure}()
#26 vendor/laravel/framework/src/Illuminate/Session/Middleware/StartSession.php(121): Illuminate/Pipeline/Pipeline->Illuminate/Pipeline/{closure}()
#27 vendor/laravel/framework/src/Illuminate/Session/Middleware/StartSession.php(64): Illuminate/Session/Middleware/StartSession->handleStatefulRequest()
#28 vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(183): Illuminate/Session/Middleware/StartSession->handle()
#29 vendor/laravel/framework/src/Illuminate/Foundation/Http/Middleware/TransformsRequest.php(21): Illuminate/Pipeline/Pipeline->Illuminate/Pipeline/{closure}()
#30 vendor/laravel/framework/src/Illuminate/Foundation/Http/Middleware/ConvertEmptyStringsToNull.php(31): Illuminate/Foundation/Http/Middleware/TransformsRequest->handle()
#31 vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(183): Illuminate/Foundation/Http/Middleware/ConvertEmptyStringsToNull->handle()
#32 vendor/laravel/framework/src/Illuminate/Foundation/Http/Middleware/TransformsRequest.php(21): Illuminate/Pipeline/Pipeline->Illuminate/Pipeline/{closure}()
#33 vendor/laravel/framework/src/Illuminate/Foundation/Http/Middleware/TrimStrings.php(40): Illuminate/Foundation/Http/Middleware/TransformsRequest->handle()
#34 vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(183): Illuminate/Foundation/Http/Middleware/TrimStrings->handle()
#35 vendor/laravel/framework/src/Illuminate/Foundation/Http/Middleware/ValidatePostSize.php(27): Illuminate/Pipeline/Pipeline->Illuminate/Pipeline/{closure}()
#36 vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(183): Illuminate/Foundation/Http/Middleware/ValidatePostSize->handle()
#37 vendor/laravel/framework/src/Illuminate/Foundation/Http/Middleware/PreventRequestsDuringMaintenance.php(99): Illuminate/Pipeline/Pipeline->Illuminate/Pipeline/{closure}()
#38 vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(183): Illuminate/Foundation/Http/Middleware/PreventRequestsDuringMaintenance->handle()
#39 vendor/laravel/framework/src/Illuminate/Http/Middleware/HandleCors.php(49): Illuminate/Pipeline/Pipeline->Illuminate/Pipeline/{closure}()
#40 vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(183): Illuminate/Http/Middleware/HandleCors->handle()
#41 vendor/laravel/framework/src/Illuminate/Http/Middleware/TrustProxies.php(39): Illuminate/Pipeline/Pipeline->Illuminate/Pipeline/{closure}()
#42 vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(183): Illuminate/Http/Middleware/TrustProxies->handle()
#43 vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(119): Illuminate/Pipeline/Pipeline->Illuminate/Pipeline/{closure}()
#44 vendor/laravel/framework/src/Illuminate/Foundation/Http/Kernel.php(175): Illuminate/Pipeline/Pipeline->then()
#45 vendor/laravel/framework/src/Illuminate/Foundation/Http/Kernel.php(144): Illuminate/Foundation/Http/Kernel->sendRequestThroughRouter()
#46 public/index.php(51): Illuminate/Foundation/Http/Kernel->handle()
#47 {main}