Error when attempting to change user data

I am testing this plugin on a fresh install of WP (using Bitnami) and get the following error when clicking “update” on the file details page.

Not Found The requested URL /wp-admin/options-general.php was not found on this server.”

My WP install is in a subfolder from the domain “/wordpress” so I assume the button isn’t getting the full root url.
Everything else seems to work fine.