Symfony 5, Nginx Rewrites for ISPconfig 3.1

Hello Forum Users,

i try to get Symfony Framework 5 running under ISPconfig3.1 on Debian 9 with Nginx.

After the Files are in a Public Folder i need to change the root of the Doc to point to /public in the web Folder.

I've used the following rewrite (This rewrite works for SlimFramework with the same kind of Setup.)

Code:

location / {
    root {DOCROOT}public;
    index index.php;
    try_files $uri $uri/ /index.php?$query_string /public/index.php?$query_string;
}

Mainly the Routing works to routes like /home /users but not to the root /
on the root i get a 404 error.

anybody got a working rewrite to use Symfony5 where the routing to root works ?