502 and 403

502 Bad Gateway

Usually nginx/proxy could not reach PHP-FPM or a Node/Python upstream:

1. Stack tab — are nginx/php-fpm (Native) or the web container (Docker) running?
2. Is the PHP pin installed? Otherwise fallback + warning on sync
3. For Node/Python proxy — is the managed dev server alive on the right port?
4. Web logs / macstack doctor --stack
5. After changing PHP in Docker, wait for the rebuild

403 Forbidden

Often a wrong docroot or security rules:

1. Ensure the index file is in the real docroot (Docroot)
2. Check .macstack/nginx.conf — no accidental deny on /
3. Bitrix/CMS: is the installer finished; any IP lock in app config?
4. File permissions under ~/MacFullStack/www/…

After config edits — Reload / Sync vhosts.