CORE/src/Error/ExceptionTrap.php (line 134)
object(Cake\Http\Exception\MissingControllerException) id:0 { protected _defaultCode => (int) 404 protected _messageTemplate => 'Controller class %s could not be found.' protected _attributes => [ 'class' => 'Uploads', 'plugin' => null, 'prefix' => null, '_ext' => null, ] protected _responseHeaders => null protected message => 'Controller class Uploads could not be found.' protected code => (int) 404 protected file => '/var/www/vendor/cakephp/cakephp/src/Controller/ControllerFactory.php' protected line => (int) 348 }
CORE/src/Error/ExceptionTrap.php (line 135)
'Cake\Error\Renderer\WebExceptionRenderer'

Warning: Unable to emit headers. Headers sent in file=/var/www/vendor/cakephp/cakephp/src/Error/Debugger.php line=1106 in /var/www/vendor/cakephp/cakephp/src/Http/ResponseEmitter.php on line 71

Warning: Cannot modify header information - headers already sent by (output started at /var/www/vendor/cakephp/cakephp/src/Error/Debugger.php:1106) in /var/www/vendor/cakephp/cakephp/src/Http/ResponseEmitter.php on line 168

Warning: Cannot modify header information - headers already sent by (output started at /var/www/vendor/cakephp/cakephp/src/Error/Debugger.php:1106) in /var/www/vendor/cakephp/cakephp/src/Http/ResponseEmitter.php on line 197
Error: Controller class Uploads could not be found.

Controller class Uploads could not be found. 📋

Cake\Http\Exception\MissingControllerException
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     * @return \Cake\Http\Exception\MissingControllerException
     */
    protected function missingController(ServerRequest $request)
    {
        return new MissingControllerException([
            'class' => $request->getParam('controller'),
            'plugin' => $request->getParam('plugin'),
            'prefix' => $request->getParam('prefix'),
            '_ext' => $request->getParam('_ext'),

If you want to customize this error message, create templates/Error/error500.php