Laravel 5 AJAX 500 게시 오류

분명히 작동하지만 Post Request에서 500 내부 서버 오류가 발생하는 Laravel 5 및 AJAX https://www.youtube.com/watch?v=PRCm-7mEDkY에 대한이 자습서를 따르려고합니다 . 내가 무엇을 잘못하고 있지? 간단한 예를 이해하고 거기에서 작업하고 싶습니다.

HTML

<a href="#" id="get">Get</a>
<hr>
<form action="#">
    <input type="text" name="name">
    <button type="submit">Send</button>
</form>

JS

$(function() {
    $('#get').click(function(e){

        e.preventDefault();

        $.get('categories', function(data) {
            console.log(data);
        });
    });

    $('form').submit(function(e) {
        e.preventDefault();

        $.post('categories', {name:'name anything'}, function(data) {
            console.log(data);
        });
    });

});

노선

Route::post('/categories', function() {
    if(Request::ajax() ) {
        var_dump(Input::all());
        return 'ajax post request';
    }
});

스토리지 로그

#0 /Users/neil/Sites/demo02/app/Http/Middleware/VerifyCsrfToken.php(17): Illuminate\Foundation\Http\Middleware\VerifyCsrfToken->handle(Object(Illuminate\Http\Request), Object(Closure))
#1 /Users/neil/Sites/demo02/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(125): App\Http\Middleware\VerifyCsrfToken->handle(Object(Illuminate\Http\Request), Object(Closure))
#2 /Users/neil/Sites/demo02/vendor/laravel/framework/src/Illuminate/View/Middleware/ShareErrorsFromSession.php(55): Illuminate\Pipeline\Pipeline->Illuminate\Pipeline\{closure}(Object(Illuminate\Http\Request))
#3 /Users/neil/Sites/demo02/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(125): Illuminate\View\Middleware\ShareErrorsFromSession->handle(Object(Illuminate\Http\Request), Object(Closure))
#4 /Users/neil/Sites/demo02/vendor/laravel/framework/src/Illuminate/Session/Middleware/StartSession.php(61): Illuminate\Pipeline\Pipeline->Illuminate\Pipeline\{closure}(Object(Illuminate\Http\Request))
#5 /Users/neil/Sites/demo02/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(125): Illuminate\Session\Middleware\StartSession->handle(Object(Illuminate\Http\Request), Object(Closure))
#6 /Users/neil/Sites/demo02/vendor/laravel/framework/src/Illuminate/Cookie/Middleware/AddQueuedCookiesToResponse.php(36): Illuminate\Pipeline\Pipeline->Illuminate\Pipeline\{closure}(Object(Illuminate\Http\Request))
#7 /Users/neil/Sites/demo02/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(125): Illuminate\Cookie\Middleware\AddQueuedCookiesToResponse->handle(Object(Illuminate\Http\Request), Object(Closure))
#8 /Users/neil/Sites/demo02/vendor/laravel/framework/src/Illuminate/Cookie/Middleware/EncryptCookies.php(40): Illuminate\Pipeline\Pipeline->Illuminate\Pipeline\{closure}(Object(Illuminate\Http\Request))
#9 /Users/neil/Sites/demo02/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(125): Illuminate\Cookie\Middleware\EncryptCookies->handle(Object(Illuminate\Http\Request), Object(Closure))
#10 /Users/neil/Sites/demo02/vendor/laravel/framework/src/Illuminate/Foundation/Http/Middleware/CheckForMaintenanceMode.php(42): Illuminate\Pipeline\Pipeline->Illuminate\Pipeline\{closure}(Object(Illuminate\Http\Request))
#11 /Users/neil/Sites/demo02/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(125): Illuminate\Foundation\Http\Middleware\CheckForMaintenanceMode->handle(Object(Illuminate\Http\Request), Object(Closure))
#12 [internal function]: Illuminate\Pipeline\Pipeline->Illuminate\Pipeline\{closure}(Object(Illuminate\Http\Request))
#13 /Users/neil/Sites/demo02/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(101): call_user_func(Object(Closure), Object(Illuminate\Http\Request))
#14 /Users/neil/Sites/demo02/vendor/laravel/framework/src/Illuminate/Foundation/Http/Kernel.php(111): Illuminate\Pipeline\Pipeline->then(Object(Closure))
#15 /Users/neil/Sites/demo02/vendor/laravel/framework/src/Illuminate/Foundation/Http/Kernel.php(84): Illuminate\Foundation\Http\Kernel->sendRequestThroughRouter(Object(Illuminate\Http\Request))
#16 /Users/neil/Sites/demo02/public/index.php(53): Illuminate\Foundation\Http\Kernel->handle(Object(Illuminate\Http\Request))
#17 /Users/neil/Sites/demo02/server.php(21): require_once('/Users/neil...')
#18 {main}