Where does Xojo expect to find FontConfig?

The server I have access to, list these directories in /etc/fonts/fonts.conf
/usr/share/fonts
/usr/local/share/fonts

I see some fonts in /usr/share/fonts/truetype/dejavu and I just uploaded a font with Lifeboat and it appeared under /usr/local/share/fonts/

Found this forum topic: Current "Installing Fonts For Xojo Web"?