private function triggerErrorDeprecation()
{
trigger_error('Usage of error middleware is deprecated as of 1.3.0, and will be removed in 2.0.0; ' . 'please see https://docs.zendframework.com/zend-stratigility/migration/to-v2/ ' . 'for details on how to update your application to remove this message.', E_USER_DEPRECATED);
}