0E800 Chwck you web console, usually f12. Check your web server error logs. Probably a permission error.
BryanS Ok, I got it installed but now when I try to login it says "The requested resource was not found."
luceos Verify your config.php and see to it that url has been set properly. It should be the domain name with protocol prefixed, eg: http://discuss.flarum.org
luceos BryanS then your url in the config should be http://<ip>/forum and make sure your mod rewrite is set up correctly. Are you using Nginx by any chance?
BryanS i'm using apache, mod rewrite is on and the config.php is set as you said. in the browser console im getting a 404 error, the browser is looking for http://IP/forum/login
luceos Try the following guide to identify the issue: https://discuss.flarum.org/d/1869-solving-404-not-found-issues-on-apache
luceos BryanS you have to add it to the vhost configuration file /etc/apache2/sites-enabled/ make sure it's within the VirtualHost or all sites are able to access that specific site.