Warning (2): Declaration of App\Controller\ErrorController::beforeFilter(Cake\Event\Event $event) should be compatible with Cake\Controller\Controller::beforeFilter(Cake\Event\EventInterface $event) [APP/Controller/ErrorController.php, line 24]
Warning (2): Declaration of App\Controller\ErrorController::beforeRender(Cake\Event\Event $event) should be compatible with Cake\Controller\Controller::beforeRender(Cake\Event\EventInterface $event) [APP/Controller/ErrorController.php, line 24]
Warning (2): Declaration of App\Controller\ErrorController::afterFilter(Cake\Event\Event $event) should be compatible with Cake\Controller\Controller::afterFilter(Cake\Event\EventInterface $event) [APP/Controller/ErrorController.php, line 24]
Warning (512): Unable to emit headers. Headers sent in file=/home/1/r/retro/beta/vendor/cakephp/cakephp/src/Error/Debugger.php line=830 [CORE/src/Http/ResponseEmitter.php, line 77]
Warning (2): Cannot modify header information - headers already sent by (output started at /home/1/r/retro/beta/vendor/cakephp/cakephp/src/Error/Debugger.php:830) [CORE/src/Http/ResponseEmitter.php, line 178]
Warning (2): Cannot modify header information - headers already sent by (output started at /home/1/r/retro/beta/vendor/cakephp/cakephp/src/Error/Debugger.php:830) [CORE/src/Http/ResponseEmitter.php, line 207]
Error: Missing Controller

Missing Controller

Cake\Routing\Exception\MissingControllerException
Toggle Vendor Stack Frames

Error WackyWheelsController could not be found.

/home/1/r/retro/beta/vendor/cakephp/cakephp/src/Http/ControllerFactory.php Toggle Arguments
    public function create(ServerRequest $requestResponse $response): Controller
    {
        $className $this->getControllerClass($request);
        if (!$className) {
            $this->missingController($request);
        }
        /** @var string $className */
        $reflection = new ReflectionClass($className);
        if ($reflection->isAbstract() || $reflection->isInterface()) {

In the case you tried to access a plugin controller make sure you added it to your composer file or you use the autoload option for the plugin.

Suggestion Create the class WackyWheelsController below in file: src/Controller/WackyWheelsController.php

    <?php
    
namespace App\Controller;

    use 
App\Controller\AppController;

    class 
WackyWheelsController extends AppController
    
{

    }

If you want to customize this error message, create templates/Error/missing_controller.php