Location directive is not working correctly nginx

I am trying to open the location of my index.php file for example:

The root folder is:

/path/to/my/root/folder

Code (markup):

The the url a user will use to get to this root folder is:

https://sub.mydomain.net/server/client

Code (markup):

Every time I use this location declaration I get a 404 or forbidden message

location /server/client/ {
          alias /path/to/my/root/folder;
          try_files $uri $uri/ /index.php$uri$is_args$args;
       }

Code (markup):

I just cannot work out what I am doing wrong.

Of course the index.php is located here:

   /path/to/my/root/folder/index.php

Code (markup):

Just for clarification I have declared the following also:

 index index.html index.php;
   
    location ~ \.php$ {
          include conf.d/services/php7.conf;
       }

Code (markup):

Like I said I just cannot work out what is wrong?

 

If you want nginx to serve the index.php file only, you can try with the following configuration:

location /server/client/ {
    alias /path/to/my/root/folder/index.php;
}

Code (markup):

If you are still getting an error message, check the error log for more details.