XF 1.5 Friendly URL 404's

[devhops]

Hi,

I've had the oh so common friendly URL's 404. The homepage works, but any other URL I click 404's. I'm running nginx and php-fpm on CentOS.

I know it's something in the nginx conf file that I've set incorrectly or overlooked, but I can't identify it. Can anyone help? Here is my config file.

server {
    listen 80;
    server_name mydomain.com www.mydomain.com;
    return 301 https://$host$request_uri;
}

server {
    listen 443 ssl; # managed by Certbot
    ssl_certificate /etc/letsencrypt/live/mydomain.com/fullchain.pem; # managed by Certbot
    ssl_certificate_key /etc/letsencrypt/live/mydomain.com/privkey.pem; # managed by Certbot

    include /etc/letsencrypt/options-ssl-nginx.conf; # managed by Certbot

    if ($scheme != "https") {
        return 301 https://$host$request_uri;
    } # managed by Certbot


    root         /data/mydomain;

    index index.php index.html index.htm;

    # Load configuration files for the default server block.
    include /etc/nginx/default.d/*.conf;

    location / {
    }

    # pass the PHP scripts to FastCGI server listening on 127.0.0.1:9000

    location /data/mydomain {
        try_files $uri $uri/ /data/mydomain/index.php?$uri&$args;
        index index.php index.html;
    }

    location /data/mydomain/install/data/ {
        internal;
    }
    location /data/mydomain/install/templates/ {
        internal;
    }
    location /data/mydomain/internal_data/ {
        internal;
    }
    location /data/mydomain/library/ {
    }
    location /data/mydomain/install/templates/ {
        internal;
    }
    location /data/mydomain/internal_data/ {
        internal;
    }
    location /data/mydomain/library/ {
        internal;
    }

    location ~ \.php$ {
    root           /data/mydomain;
    try_files $uri =404;
    fastcgi_pass   127.0.0.1:9000;
    fastcgi_index  index.php;
    fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
    include        fastcgi_params;
    }

    error_page 404 /404.html;
        location = /40x.html {
    }

    error_page 500 502 503 504 /50x.html;
        location = /50x.html {
    }
}