$parts = explode('\\', static::class);
        trigger_error(
            sprintf(

Cake\Error\ErrorTrap->handleError() [internal], line ??
/var/www/html/vendor/cakephp/cakephp/src/Controller/Controller.php /var/www/html/vendor/cakephp/cakephp/src/Controller/Controller.php, line 316
Cake\Controller\Controller->__get() /var/www/html/src/Controller/AppController.php, line 96
App\Controller\AppController->beforeRender() /var/www/html/src/Controller/ErrorController.php, line 54
App\Controller\ErrorController->beforeRender() /var/www/html/vendor/cakephp/cakephp/src/Event/EventManager.php, line 334
Cake\Event\EventManager->_callListener() /var/www/html/vendor/cakephp/cakephp/src/Event/EventManager.php, line 312
Cake\Event\EventManager->dispatch() /var/www/html/vendor/cakephp/cakephp/src/Event/EventDispatcherTrait.php, line 88
Cake\Controller\Controller->dispatchEvent() /var/www/html/vendor/cakephp/cakephp/src/Controller/Controller.php, line 696
Cake\Controller\Controller->render() /var/www/html/vendor/cakephp/cakephp/src/Error/Renderer/WebExceptionRenderer.php, line 419
Cake\Error\Renderer\WebExceptionRenderer->_outputMessage() /var/www/html/vendor/cakephp/cakephp/src/Error/Renderer/WebExceptionRenderer.php, line 290
Cake\Error\Renderer\WebExceptionRenderer->render() /var/www/html/vendor/cakephp/cakephp/src/Error/Middleware/ErrorHandlerMiddleware.php, line 149
Cake\Error\Middleware\ErrorHandlerMiddleware->handleException() /var/www/html/vendor/cakephp/cakephp/src/Error/Middleware/ErrorHandlerMiddleware.php, line 119
Cake\Error\Middleware\ErrorHandlerMiddleware->process() /var/www/html/vendor/cakephp/cakephp/src/Http/Runner.php, line 82
Cake\Http\Runner->handle() /var/www/html/vendor/cakephp/debug_kit/src/Middleware/DebugKitMiddleware.php, line 60
DebugKit\Middleware\DebugKitMiddleware->process() /var/www/html/vendor/cakephp/cakephp/src/Http/Runner.php, line 82
Cake\Http\Runner->handle() /var/www/html/vendor/cakephp/cakephp/src/Http/Runner.php, line 60
Cake\Http\Runner->run() /var/www/html/vendor/cakephp/cakephp/src/Http/Server.php, line 104
Cake\Http\Server->run() /var/www/html/webroot/index.php, line 36
[main]

            $message = "Unable to emit headers. Headers sent in file={$file} line={$line}";
            trigger_error($message, E_USER_WARNING);
        }

Cake\Error\ErrorTrap->handleError() [internal], line ??
/var/www/html/vendor/cakephp/cakephp/src/Http/ResponseEmitter.php /var/www/html/vendor/cakephp/cakephp/src/Http/ResponseEmitter.php, line 65
Cake\Http\ResponseEmitter->emit() /var/www/html/vendor/cakephp/cakephp/src/Http/Server.php, line 148
Cake\Http\Server->emit() /var/www/html/webroot/index.php, line 36
[main]

        $reasonPhrase = $response->getReasonPhrase();
        header(sprintf(
            'HTTP/%s %d%s',

Cake\Error\ErrorTrap->handleError() [internal], line ??
/var/www/html/vendor/cakephp/cakephp/src/Http/ResponseEmitter.php /var/www/html/vendor/cakephp/cakephp/src/Http/ResponseEmitter.php, line 159
Cake\Http\ResponseEmitter->emitStatusLine() /var/www/html/vendor/cakephp/cakephp/src/Http/ResponseEmitter.php, line 68
Cake\Http\ResponseEmitter->emit() /var/www/html/vendor/cakephp/cakephp/src/Http/Server.php, line 148
Cake\Http\Server->emit() /var/www/html/webroot/index.php, line 36
[main]

            foreach ($values as $value) {
                header(sprintf(
                    '%s: %s',

Cake\Error\ErrorTrap->handleError() [internal], line ??
/var/www/html/vendor/cakephp/cakephp/src/Http/ResponseEmitter.php /var/www/html/vendor/cakephp/cakephp/src/Http/ResponseEmitter.php, line 192
Cake\Http\ResponseEmitter->emitHeaders() /var/www/html/vendor/cakephp/cakephp/src/Http/ResponseEmitter.php, line 69
Cake\Http\ResponseEmitter->emit() /var/www/html/vendor/cakephp/cakephp/src/Http/Server.php, line 148
Cake\Http\Server->emit() /var/www/html/webroot/index.php, line 36
[main]