errors in configuration
There is a more update version. Its on version 3.0 there up to version 3.1
The install instructions are incorrect.
the file /etc/nginx/sites-enabled/default
has this line
proxy_set_header X-Graylog-Server-URL http://$server_name/api;
it should be
proxy_set_header X-Graylog-Server-URL http://$server_name;
DO NOT PAY FOR THIS!!! It should be free! Websoft9 is a third party that charges for FREE software.
Thank you, that seemed to do the trick. I really hope whoever is maintaining this image fixes this issue.