"rewrite or internal redirection cycle while internally redirecting to" Nginx

rewrite or internal redirection cycle while internally redirecting to "/opt/soa/adminControl/v1/ro42/", client: 127.0.0.1, server: _, request: "GET /opt/soa/adminControl/v1/ro42/ HTTP/1.1", host: "localhost:81"

I have the above error after I did

curl localhost:81/opt/soa/adminControl/v1/ro42/

shouldn't I be getting whatever is inside the index.php file. My php controllers are in /opt/soa/adminControl/v1/ro42/. I have Apache2 listening in 80 as the reverse proxy server serving php endpoints to nginx. Index.php is just

php echo "Hello";

File1:/etc/nginx/nginx.conf

events {
worker_connections 1024;
}

http {
  access_log /var/log/nginx/access.log;
  error_log /var/log/nginx/error.log;

  server {
    listen 81 default_server;
    server_name _;

    location  /opt/soa/adminControl/v1/ro42 {
      try_files $uri $uri$is_args$args;
      include snippets/fastcgi-php.conf;
      fastcgi_pass 127.0.0.1:9000;
    }
  }
}

Fil2: /etc/apache2/sites-enabled/myPage.conf

<VirtualHost *:80>

    ErrorLog ${APACHE_LOG_DIR}/errorVH.log
    CustomLog ${APACHE_LOG_DIR}/access.log combined

    ServerName 54.172.180.152
    DocumentRoot /var/www/userExperience
    ProxyPass /opt/soa/adminControl/v1/ro42 http://localhost:81
    ProxyPassReverse /opt/soa/adminControl/v1/ro42 http://localhost:81

</VirtualHost>

I think the error is in the way how I'm calling

try_files $uri $uri$is_args$args;

in nginx.conf. I modified the line to: "try_files $uri$is_args$args =404;" and after I curl it. I started getting

404 Not Found