Laravel - Trying to access array offset of value of type int

Question

I have an issue when I try to submit post requests to the database. The interesting thing is, that the error only occurs when I use PHP version 7.4.2. In PHP version 7.3.9 everything works fine. I am using Laravel 6.17.

When is Laravel going to fix this issue ?

That's my stack trace, when the error comes up.

Trying to access array offset on value of type int   
in CreateCourseController.php line 176
at HandleExceptions->handleError()
in CreateCourseController.php line 176
at CreateCourseController->createDates()
in CreateCourseController.php line 101
at CreateCourseController->createCourse()
at call_user_func_array()
in Controller.php line 54
at Controller->callAction()
in ControllerDispatcher.php line 45
at ControllerDispatcher->dispatch()
in Route.php line 219
at Route->runController()
in Route.php line 176
at Route->run()
in Router.php line 681
at Router->Illuminate\Routing\{closure}()
in Pipeline.php line 130
at Pipeline->Illuminate\Pipeline\{closure}()
in SubstituteBindings.php line 41
at SubstituteBindings->handle()
in Pipeline.php line 171
at Pipeline->Illuminate\Pipeline\{closure}()
in VerifyCsrfToken.php line 76
at VerifyCsrfToken->handle()
in Pipeline.php line 171
at Pipeline->Illuminate\Pipeline\{closure}()
in ShareErrorsFromSession.php line 49
at ShareErrorsFromSession->handle()
in Pipeline.php line 171
at Pipeline->Illuminate\Pipeline\{closure}()
in StartSession.php line 56
at StartSession->handle()
in Pipeline.php line 171
at Pipeline->Illuminate\Pipeline\{closure}()
in AddQueuedCookiesToResponse.php line 37
at AddQueuedCookiesToResponse->handle()
in Pipeline.php line 171
at Pipeline->Illuminate\Pipeline\{closure}()
in EncryptCookies.php line 66
at EncryptCookies->handle()
in Pipeline.php line 171
at Pipeline->Illuminate\Pipeline\{closure}()
in Pipeline.php line 105
at Pipeline->then()
in Router.php line 683
at Router->runRouteWithinStack()
in Router.php line 658
at Router->runRoute()
in Router.php line 624
at Router->dispatchToRoute()
in Router.php line 613
at Router->dispatch()
in Kernel.php line 170
at Kernel->Illuminate\Foundation\Http\{closure}()
in Pipeline.php line 130
at Pipeline->Illuminate\Pipeline\{closure}()
in TransformsRequest.php line 21
at TransformsRequest->handle()
in Pipeline.php line 171
at Pipeline->Illuminate\Pipeline\{closure}()
in TransformsRequest.php line 21
at TransformsRequest->handle()
in Pipeline.php line 171
at Pipeline->Illuminate\Pipeline\{closure}()
in ValidatePostSize.php line 27
at ValidatePostSize->handle()
in Pipeline.php line 171
at Pipeline->Illuminate\Pipeline\{closure}()
in CheckForMaintenanceMode.php line 63
at CheckForMaintenanceMode->handle()
in Pipeline.php line 171
at Pipeline->Illuminate\Pipeline\{closure}()
in TrustProxies.php line 57
at TrustProxies->handle()
in Pipeline.php line 171
at Pipeline->Illuminate\Pipeline\{closure}()
in Pipeline.php line 105
at Pipeline->then()
in Kernel.php line 145
at Kernel->sendRequestThroughRouter()
in Kernel.php line 110
at Kernel->handle()
in index.php line 55

Regards

Answer 1

composer update worked for my case:

I had a Laravel 5.6 app, with Php 7.1.

Also, I had to change laracasts/generators in composer.json to ^1.0 from dev-master to get composer update going, ike so:

"laracasts/generators": "^1.0"

Started having this issue working back on some old projects, the issue occurs on php artisan migrate right after composer install.

https://github.com/spatie/laravel-permission/issues/1370#issuecomment-676556816