This is a small compatibility fix required for all websites running WordPress 4.x.x – this update ensures not to call the blocks API (introduced with Gutenberg) where it does not exist due to an older WordPress version.
We discovered a compatibility problem with some of the PeepSo plugins, especially Groups, and the latest WordPress 4.8.2 release. That’s why we have just released PeepSo 1.8.7. It contains just the compatibility improvements with the latest WP release. If you have any issues with your groups and groups categories not showing, simply edit the categories and save them again. Read more