Facebook link isn't working on new site

can you look at http://www.identityadvantage.org/001-had-i-not-learned-christ/ and check the Facebook link? I’ve used your plugin on my other site and it works great! But for some reason (only) the Facebook link says “page not found” but all the other share links work perfectly.

Not sure what to fix or change…???

Thanks in advance!

https://wordpress.org/plugins/simple-share-buttons-adder/