Trouble accessing - .htaccess problem?

Hello, I just finished installing Omeka on an ubuntu server, but when I try to navigate to it, I get a 500 Internal Server Error page. When I check apache’s error log, I get this result:

It seems to me that I am being caught in a redirect loop of some sort. I have the omeka files in the standard /var/www/ directory. I left the .htaccess file with the default settings. Does anyone have any ideas on why I am having this issue?

Figured out my problem: in the 000-default.conf file, my document root was set as /var/www/html instead of /var/www. This was causing the server to look for a directory that didn’t exist. Now I’m having a mod-rewrite issue, but this is progress.