Hi - so I bulk updated all of my Pro websites and everyone of them that uses THE GRID which is many have php errors on the front end and back end.
We’ve began temporarily rolling back all Pro versions from 3.1.0 to as they are fully compatible with the grid Version 2.7.3 and working well.
One of the many errors showing is below-
Warning: get_class() expects parameter 1 to be object, string given in /home/**********/public_html/wp-content/themes/pro/framework/functions/plugins/the-grid.php on line 45
Unfortunately we cannot leave any of these websites live with problems so we have rolled back all of them temporarily but we have left login information for one of the websites so that you may - re-update and investigate the issue. The website is spanish so it relies on muscle memory if you don’t speak espanol 
See secure note
EDIT UPDATE
We have narrowed it down whereby it only effects websites that use “THE GRID” as a newsfeed generator (generating posts as opposed to pages)
I have listed some examples of sites where Pro and Grid work well together while updated and some more websites that use the Grid and Pro as a newsfeed whereby the errors all appear.