403 forbidden error on nginx server

I have the following code, which for some reason is creating a 403 error when I go to my domain:

/etc/nginx/sites-available/default

server {
        listen 80;
        root /home/site;
        index landing.html;
        server_name site.com www.site.com;

        location / {
                try_files $uri $uri/ /landing.html;
                index landing.html;
        }
}

What could be creating this problem? I'm new to this, so please be easy on me. Also note that I replaced the actual domain with site.com for this post