Why is wordpress site download file instead displaying site?

I can’t get my wordpress install live locally, i’m using wordpress, nginx, mySQL, php 7.1, ubuntu 16.04 and below is my nginx file. I just get a download file instead of the website.

server { listen 80 default_server; listen [::]:80 default_server ipv6only=on;

    root /var/www/html/homebuilder;
    index index.php index.html index.htm;

    server_name wwww.qa.homebuilder.com homebuilder.com;

    location / {
            # try_files $uri $uri/ =404;
             index index.php index.html index.htm index.nginx-debian.html;
            try_files $uri $uri/ /index.php?q=$uri&$args;
    }

    error_page 404 /404.html;

    error_page 500 502 503 504 /50x.html;
    location = /50x.html {
            root /usr/share/nginx/html;
    }

    location ~ \.php$ {
            fastcgi_split_path_info ^(.+\.php)(/.+)$;
            fastcgi_pass unix:/var/run/php/php7.0-fpm.sock;
            fastcgi_index index.php;
            include fastcgi_params;
    }

}