private static function show_default_error($error_data) {
	$template_path    = \alsvanzelf\fem\ROOT_DIR.'vendor/alsvanzelf/fem/src/templates/default_error.html';
	$template_content = file_get_contents($template_path);
	
	$renderer = new \Mustache_Engine();
	echo $renderer->render($template_content, $error_data);
}