Hey I am using the code I have found here in the forum to show sharing buttons automatically on all blog posts. But when I add it, I am getting this warning…

What am I missing?? It looks like the same code that support has given over and over here on the forum.
**Also, I love that new rollback when there is an error. First time I am seeing that. Is that X/PRO or is that Wordpress doing that?
THANK YOU!
Noelle