Trying to get property 'title' of non-object

(1/1) ErrorException

Trying to get property 'title' of non-object

in SiteController.php line 188
at HandleExceptions->handleError(8, 'Trying to get property \'title\' of non-object', '/home/tnovin/public_html/tnovin/app/Http/Controllers/SiteController.php', 188, array('id' => '5c6b254cb33d036ef22d44d2', 'last_news' => object(Collection), 'category' => null, 'posts' => object(LengthAwarePaginator)))in SiteController.php line 188
at SiteController->category('5c6b254cb33d036ef22d44d2')
at call_user_func_array(array(object(SiteController), 'category'), array('id' => '5c6b254cb33d036ef22d44d2'))in Controller.php line 54
at Controller->callAction('category', array('id' => '5c6b254cb33d036ef22d44d2'))in ControllerDispatcher.php line 45
at ControllerDispatcher->dispatch(object(Route), object(SiteController), 'category')in Route.php line 219
at Route->runController()in Route.php line 176
at Route->run()in Router.php line 680
at Router->Illuminate\Routing\{closure}(object(Request))in Pipeline.php line 30
at Pipeline->Illuminate\Routing\{closure}(object(Request))in SubstituteBindings.php line 41
at SubstituteBindings->handle(object(Request), object(Closure))in Pipeline.php line 163
at Pipeline->Illuminate\Pipeline\{closure}(object(Request))in Pipeline.php line 53
at Pipeline->Illuminate\Routing\{closure}(object(Request))in ShareErrorsFromSession.php line 49
at ShareErrorsFromSession->handle(object(Request), object(Closure))in Pipeline.php line 163
at Pipeline->Illuminate\Pipeline\{closure}(object(Request))in Pipeline.php line 53
at Pipeline->Illuminate\Routing\{closure}(object(Request))in StartSession.php line 56
at StartSession->handle(object(Request), object(Closure))in Pipeline.php line 163
at Pipeline->Illuminate\Pipeline\{closure}(object(Request))in Pipeline.php line 53
at Pipeline->Illuminate\Routing\{closure}(object(Request))in AddQueuedCookiesToResponse.php line 37
at AddQueuedCookiesToResponse->handle(object(Request), object(Closure))in Pipeline.php line 163
at Pipeline->Illuminate\Pipeline\{closure}(object(Request))in Pipeline.php line 53
at Pipeline->Illuminate\Routing\{closure}(object(Request))in EncryptCookies.php line 66
at EncryptCookies->handle(object(Request), object(Closure))in Pipeline.php line 163
at Pipeline->Illuminate\Pipeline\{closure}(object(Request))in Pipeline.php line 53
at Pipeline->Illuminate\Routing\{closure}(object(Request))in Pipeline.php line 104
at Pipeline->then(object(Closure))in Router.php line 682
at Router->runRouteWithinStack(object(Route), object(Request))in Router.php line 657
at Router->runRoute(object(Request), object(Route))in Router.php line 623
at Router->dispatchToRoute(object(Request))in Router.php line 612
at Router->dispatch(object(Request))in Kernel.php line 176
at Kernel->Illuminate\Foundation\Http\{closure}(object(Request))in Pipeline.php line 30
at Pipeline->Illuminate\Routing\{closure}(object(Request))in TransformsRequest.php line 21
at TransformsRequest->handle(object(Request), object(Closure))in Pipeline.php line 163
at Pipeline->Illuminate\Pipeline\{closure}(object(Request))in Pipeline.php line 53
at Pipeline->Illuminate\Routing\{closure}(object(Request))in RequestResponseLogger.php line 19
at RequestResponseLogger->handle(object(Request), object(Closure))in Pipeline.php line 163
at Pipeline->Illuminate\Pipeline\{closure}(object(Request))in Pipeline.php line 53
at Pipeline->Illuminate\Routing\{closure}(object(Request))in CheckForMaintenanceMode.php line 62
at CheckForMaintenanceMode->handle(object(Request), object(Closure))in Pipeline.php line 163
at Pipeline->Illuminate\Pipeline\{closure}(object(Request))in Pipeline.php line 53
at Pipeline->Illuminate\Routing\{closure}(object(Request))in Pipeline.php line 104
at Pipeline->then(object(Closure))in Kernel.php line 151
at Kernel->sendRequestThroughRouter(object(Request))in Kernel.php line 116
at Kernel->handle(object(Request))in index.php line 53