How to run sites in subdirectories with NGINX

Question

My NGINX app looks like so:

server {
    listen 80;
    server_name server_domain_or_IP;

    location / {
        include proxy_params;
        proxy_pass http://unix:/home/ubuntu/home-app.sock;
    }

    location /memory-match {
        include proxy_params;
        proxy_pass http://unix:/home/ubuntu/mm-app.sock;
    }
}

the site at directory / works but the site at directory /memory-match gives an error that reads "The requested URL was not found on the server. If you entered the URL manually please check your spelling and try again."

I know that both sites work as switching the directories will still result in the subdirectory not working.

Any help or insight is much appreciated.