Error 404 Nginx Wordpress permalinks

I get a plesk server with nginx and a website mydomain.com running Prestashop. It works fine.

I recently installed wordpress in a sub-directory mydomain/blog/, works fine except when I enable Permalinks...

I found this, but doesn't work, maybe I don't set up in the right way ?
https://www.conetix.com.au/support/article/how-enable-rewrite-rules-plesk-125-nginx
https://kb.plesk.com/en/126908

Here my additional config in plesk :...

Error 404 Nginx Wordpress permalinks