I solved this myself.

The issue was a misconfiguration of both Nginx and Gunicorn.

Nginx was not set to listen on a port. Here is the updated site configuration file:

server {
    listen 1234;
    server_name [DROPLET IP ADDRESS];

    access_log off;

    location /static/ {
        alias /home/myuser/myvirtualenv/myproject/static/;
    }

    location / {
        proxy_pass http://127.0.0.1:8001;
        proxy_set_header X-Forwarded-Host $server_name;
        proxy_set_header X-Real-IP $remote_addr;
        add_header P3P 'CP="ALL DSP COR PSAa PSDa OUR NOR ONL UNI COM NAV"';
    }
}

Gunicorn’s issue was that it was set to listen to my hosts IP address rather than the address Nginx’s “proxy_pass.”

I initially launched Gunicorn using my Droplet’s IP address.

gunicorn --bind [DROPLET IP ADDRESS]:8001 drawbook.wsgi

I changed [DROPLET IP ADDRESS] to 127.0.0.1 and now everything works after restarting both Gunicorn and Nginx.