class AuthController extends AuthControllerCore
{
    public $onepagecheckoutps;

    public function init()
    {
        parent::init();
        if (Module::isInstalled('onepagecheckoutps')) {
            $opc = Module::getInstanceByName('onepagecheckoutps');
            if (Validate::isLoadedObject($opc) && $opc->active) {
                if ($opc->core->isVisible() && $opc->checkCustomerAccessToModule()) {
                    // CORRECCIÓN PARA PHP 7.4+
                    if (isset($opc->config_vars['OPC_REPLACE_AUTH_CONTROLLER']) && $opc->config_vars['OPC_REPLACE_AUTH_CONTROLLER']) {
                        $this->onepagecheckoutps = $opc;
                    }
                }
            }
        }
    }

    public function initContent()
    {
        if (Validate::isLoadedObject($this->onepagecheckoutps)) {
            parent::initContent();
            $this->onepagecheckoutps->initContentRegisterControllerOPC($this, '');
        } elseif (Tools::isSubmit('submitCreate')) {
            Hook::exec('actionContactFormSubmitCaptcha');
            if (!sizeof($this->context->controller->errors)) {
                parent::initContent();
            } else {
                $register_form = $this
                    ->makeCustomerForm()
                    ->setGuestAllowed(false)
                    ->fillWith(Tools::getAllValues());
                FrontController::initContent();
                $this->context->smarty->assign(array(
                    'register_form' => $register_form->getProxy(),
                    'hook_create_account_top' => Hook::exec('displayCustomerAccountFormTop')
                ));
                $this->setTemplate('customer/registration');
            }
        } else {
            parent::initContent();
        }
    }

    public function setMedia()
    {
        parent::setMedia();
        if (Validate::isLoadedObject($this->onepagecheckoutps)) {
            $this->onepagecheckoutps->getMediaFront();
        }
    }
}

Fatal error: Uncaught Error: Class 'AuthController' not found in /hosting/www/mastergrowshop.es/public/classes/controller/Controller.php:233
Stack trace:
#0 /hosting/www/mastergrowshop.es/public/classes/Dispatcher.php(517): ControllerCore::getController()
#1 /hosting/www/mastergrowshop.es/public/index.php(28): DispatcherCore->dispatch()
#2 {main}
  thrown in /hosting/www/mastergrowshop.es/public/classes/controller/Controller.php on line 233