@rahmon is the repeated http in the actual file or is that a copy-paste error? It should only be one.
When you go to access your site, do you enter http://18.104.22.168:4567 in your browser? If not, you should use whatever URL you actually access your site at in that field instead.
For instance, we have https://community.nodebb.org in our "url" field in config.json.