Error

We're sorry, but an unhandled error occurred. Please see the details below.

Trying to get property 'categories' of non-object

/var/www/themes/genuineq-genuineq-scoala-profesorilor/pages/tms-curs.htm line 28

use Genuineq\Tms\Models\Course;
    use October\Rain\Support\Collection;
 
    function onStart()
    {
        /* Extract all the course categories. */
        $categories = Course::whereSlug($this->param('slug'))->first()->categories;
        /* Extract all the categories of the selected Course. */
        $this['similarCourses'] = new Collection([]);
        foreach ($categories as $key => $category) {
            $this['similarCourses'] = $this['similarCourses']->merge($category->courses);
        }
    }

Stack trace

# Called Code Document Line
45 Cms65cb11c63cb79110209645_f8621d282c15bafbcff168025d38b8eeClass->onStart() ~/modules/cms/classes/Controller.php 505
44 Cms\Classes\Controller->execPageCycle() ~/modules/cms/classes/Controller.php 399
43 Cms\Classes\Controller->runPage() ~/modules/cms/classes/Controller.php 230
42 Cms\Classes\Controller->run() ~/modules/cms/classes/CmsController.php 50
41 Cms\Classes\CmsController->run() ~/vendor/laravel/framework/src/Illuminate/Routing/Controller.php 54
40 Illuminate\Routing\Controller->callAction() ~/vendor/laravel/framework/src/Illuminate/Routing/ControllerDispatcher.php 45
39 Illuminate\Routing\ControllerDispatcher->dispatch() ~/vendor/laravel/framework/src/Illuminate/Routing/Route.php 219
38 Illuminate\Routing\Route->runController() ~/vendor/laravel/framework/src/Illuminate/Routing/Route.php 176
37 Illuminate\Routing\Route->run() ~/vendor/laravel/framework/src/Illuminate/Routing/Router.php 681
36 Illuminate\Routing\Router->Illuminate\Routing\{closure}() ~/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php 130
35 Illuminate\Pipeline\Pipeline->Illuminate\Pipeline\{closure}() ~/plugins/vdlp/csrf/middleware/VerifyCsrfTokenMiddleware.php 72
34 Vdlp\Csrf\Middleware\VerifyCsrfTokenMiddleware->handle() ~/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php 171
33 Illuminate\Pipeline\Pipeline->Illuminate\Pipeline\{closure}() ~/plugins/rainlab/translate/classes/LocaleMiddleware.php 29
32 RainLab\Translate\Classes\LocaleMiddleware->handle() ~/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php 171
31 Illuminate\Pipeline\Pipeline->Illuminate\Pipeline\{closure}() ~/vendor/laravel/framework/src/Illuminate/Routing/Middleware/SubstituteBindings.php 41
30 Illuminate\Routing\Middleware\SubstituteBindings->handle() ~/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php 171
29 Illuminate\Pipeline\Pipeline->Illuminate\Pipeline\{closure}() ~/vendor/laravel/framework/src/Illuminate/View/Middleware/ShareErrorsFromSession.php 49
28 Illuminate\View\Middleware\ShareErrorsFromSession->handle() ~/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php 171
27 Illuminate\Pipeline\Pipeline->Illuminate\Pipeline\{closure}() ~/vendor/laravel/framework/src/Illuminate/Session/Middleware/StartSession.php 56
26 Illuminate\Session\Middleware\StartSession->handle() ~/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php 171
25 Illuminate\Pipeline\Pipeline->Illuminate\Pipeline\{closure}() ~/vendor/laravel/framework/src/Illuminate/Cookie/Middleware/AddQueuedCookiesToResponse.php 37
24 Illuminate\Cookie\Middleware\AddQueuedCookiesToResponse->handle() ~/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php 171
23 Illuminate\Pipeline\Pipeline->Illuminate\Pipeline\{closure}() ~/vendor/laravel/framework/src/Illuminate/Cookie/Middleware/EncryptCookies.php 67
22 Illuminate\Cookie\Middleware\EncryptCookies->handle() ~/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php 171
21 Illuminate\Pipeline\Pipeline->Illuminate\Pipeline\{closure}() ~/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php 105
20 Illuminate\Pipeline\Pipeline->then() ~/vendor/laravel/framework/src/Illuminate/Routing/Router.php 683
19 Illuminate\Routing\Router->runRouteWithinStack() ~/vendor/laravel/framework/src/Illuminate/Routing/Router.php 658
18 Illuminate\Routing\Router->runRoute() ~/vendor/laravel/framework/src/Illuminate/Routing/Router.php 624
17 Illuminate\Routing\Router->dispatchToRoute() ~/vendor/october/rain/src/Router/CoreRouter.php 20
16 October\Rain\Router\CoreRouter->dispatch() ~/vendor/laravel/framework/src/Illuminate/Foundation/Http/Kernel.php 170
15 Illuminate\Foundation\Http\Kernel->Illuminate\Foundation\Http\{closure}() ~/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php 130
14 Illuminate\Pipeline\Pipeline->Illuminate\Pipeline\{closure}() ~/plugins/zaxbux/securityheaders/classes/SecurityHeaderMiddleware.php 20
13 Zaxbux\SecurityHeaders\Classes\SecurityHeaderMiddleware->handle() ~/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php 171
12 Illuminate\Pipeline\Pipeline->Illuminate\Pipeline\{closure}() ~/vendor/laravel/framework/src/Illuminate/Foundation/Http/Middleware/CheckForMaintenanceMode.php 63
11 Illuminate\Foundation\Http\Middleware\CheckForMaintenanceMode->handle() ~/vendor/october/rain/src/Foundation/Http/Middleware/CheckForMaintenanceMode.php 25
10 October\Rain\Foundation\Http\Middleware\CheckForMaintenanceMode->handle() ~/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php 171
9 Illuminate\Pipeline\Pipeline->Illuminate\Pipeline\{closure}() ~/vendor/october/rain/src/Http/Middleware/TrustHosts.php 46
8 October\Rain\Http\Middleware\TrustHosts->handle() ~/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php 171
7 Illuminate\Pipeline\Pipeline->Illuminate\Pipeline\{closure}() ~/plugins/zaxbux/securityheaders/classes/NonceGeneratorMiddleware.php 22
6 Zaxbux\SecurityHeaders\Classes\NonceGeneratorMiddleware->handle() ~/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php 171
5 Illuminate\Pipeline\Pipeline->Illuminate\Pipeline\{closure}() ~/plugins/genuineq/tms/middleware/HostHeaderMiddleware.php 17
4 Genuineq\Tms\Middleware\HostHeaderMiddleware->handle() ~/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php 171
3 Illuminate\Pipeline\Pipeline->Illuminate\Pipeline\{closure}() ~/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php 105
2 Illuminate\Pipeline\Pipeline->then() ~/vendor/laravel/framework/src/Illuminate/Foundation/Http/Kernel.php 145
1 Illuminate\Foundation\Http\Kernel->sendRequestThroughRouter() ~/vendor/laravel/framework/src/Illuminate/Foundation/Http/Kernel.php 110
0 Illuminate\Foundation\Http\Kernel->handle() ~/index.php 43