In RouteAction.php line 84: Invalid route action - laravel

Question

When I create a controller in laravel 5.4 I get this error
In RouteAction.php line 84:
Invalid route action:
[App\Http\Controllers\Admin\DashboardController].
I do not create Admin/DashboardController. Still makes a errors
web.php
Route::group(['namespace' => 'Admin', 'middleware' => ['auth:web', 'CheckAdmin'], 'prefix' => 'admin'],function (){
$this->resource('authorities', 'AuthoritiesController');
$this->resource('complaints', 'ComplaintsController');
$this->resource('schools-list', 'SchoolsListController');
$this->resource('inspection-failed', 'InspectionFailedController');
$this->resource('inspection-register', 'InspectionRegisterController');
$this->resource('inspection-results', 'InspectionResultsController');
$this->resource('inspectors-list', 'InspectionListController');
$this->resource('investigators', 'InvestigatorsController');
$this->resource('notification-infringement', 'NotificationInfringementController');
$this->resource('system-experts', 'SystemExpertsController');
$this->resource('submit-information', 'SubmitInformationController');
$this->resource('primary-committee-meeting', 'PrimaryCommitteeMeetingController');
$this->resource('list-violations-school', 'ListViolationsSchoolController');
$this->resource('announcing', 'AnnouncingController');
$this->resource('display-vote', 'DisplayVoteController');
$this->resource('announcing-supervisory-vote', 'AnnouncingSupervisoryVoteController');
$this->resource('supervisory-board-vote', 'SupervisoryBoardVoteController');
$this->resource('defense', 'DefenseController');
$this->resource('votiing-supervisory-board', 'VotiingSupervisoryBoardController');
$this->get('dashboard', 'DashboardController');
});

Answer 1

Because it is invalid. As you're using GET route, you must specify method name(unless you used ::resource):
$this->get('dashboard', 'DashboardController#methodName');

Answer 2

If you are using laravel 8 you need to add your controller and method name inside the array, otherwise, it will throw an error.
Route::get('/projects', User\ProjectController::class, 'index')->name('user.projects');
TO
Route::get('/projects', [User\ProjectController::class, 'index'])->name('user.projects');

Answer 3

I also face a similar problem:
<?php
/*
|--------------------------------------------------------------------------
| Web Routes
|--------------------------------------------------------------------------
|
| Here is where you can register web routes for your application. These
| routes are loaded by the RouteServiceProvider within a group which
| contains the "web" middleware group. Now create something great!
|
*/
Route::get('/', 'Frontend\FrontendController#index')->name('home');
Route::get('/post', 'Frontend\FrontendController#post')->name('post');
Route::get('/contact', 'Frontend\FrontendController#contact')->name('contact_us');
Route::group(['prefix' => 'admin'], function () {
Route::get('/create', 'Backend\BackendController#index');
//User Route
Route::get('/registration', '');
});
And I just remove the Route::get('/registration', ''); and it's work for me :)

Answer 4

try removes route cache file by
php artisan route:clear

Answer 5

Those who are new to Laravel or learning use
Route::resource('resource_name','controller_name')
to avoid this kind of error when you type:
php artisan route:list
In cmd or any other command line.

Answer 6

i think its because of :: before the class name instead use #
Route::get('/about','App\Http\Controllers\DemoController::about'); (Not working gives an error)
Route::get('/about','App\Http\Controllers\DemoController#about'); (But this statement works)

Answer 7

I hit the same issue but with a different cause. So I'm documenting here just in case someone else hits the same cause.
Specifically if you are using a Single Action Controller (ie: with __invoke), if you haven't added or omitted the correct use Laravel will hide the missing controller with "Invalid route action: [XController]."
This will fail
<?php
use Illuminate\Support\Facades\Route;
Route::post('/order', XController::class);
This will pass
<?php
use Illuminate\Support\Facades\Route;
use App\Http\Controllers\XController;
Route::post('/order', XController::class);
I think its a bit unfortunate that Laravel masks the underlying issue, but I think it only applies to invokable controllers, even though its a silly mistake on my behalf.

Answer 8

Lastly if you set the route like below:
Route::post('example', PostController::class);
You should have an __invoke method in your controller.

Answer 9

For recent versions of laravel, try adding square brackets like
Route::post('login',[AuthController::class,'login'])
instead of
Route::post('login', AuthController::class,'login']).
The second route will throw the error Invalid route action: since you are not invoking the route. Another alternative you can add an __invoke function on your controller if you are using the second route as mentioned above.