Sharing on Facebook

I want to share my launchpad page on Facebook, but the meta data doesn’t fill in the Facebook linsk so it looks bad. It just says “Index of /” instead of showing my logo or an image of the launchpad site.

Here’s a link to what it looks like when I try to share my page on Facebook https://overtheairtv.info/download/facebook-sharing.png

https://www.ads-software.com/plugins/launchpad-by-obox/