Pleeease help

I just uninstalled AJAX Quick Checkout extension

And my opencart just broken, i cannot access my site, /admin, nothing
HTTP ERROR 500

That's not the biggest problem, because I can install everything again, but I've much edited my twig files a lot, in the admin twig editor.

Where can I find the twigs edited in the admin !

Or does anyone know what might have happened to the site after I deleted the QuickCheckout extension?

Fixed it....

I read nginx error logs
It showed message like this:
2018/05/03 04:02:20 [error] 32295#0: *17236 FastCGI sent in stderr: "PHP message: PHP Fatal error: Uncaught Error: Class 'Twig_Extension_DTwigManager' not found in /var/www/html/storage2/modification/catalog/controller/event/theme.php:24

So i removed this line from every file with it was in in /storage
//d_twig_manager.xml
$twig->addExtension(new Twig_Extension_DTwigManager($this->registry));

I'll make a fresh install now