January 8, 2017
Replied to a post on raretrack.uk :
Rob, there's a plugin for that! You can find a bunch of extensions in http://docs.withknown.com/en/latest/plugins/community/ For likes and reposts, you'll want Kyle Mahan's "Reactions" plugin. Once that's done, if you want to add a mobile option you might take a look at http://stream.boffosocko.com/2016/sharing-from-the-indieweb-on-mobile-android-with-apps-and
The errors can sometimes be a result of which version of PHP you're running. Double check that, though I'm not sure what the minimum threshold Known requires at the moment. Usually these days v5.6 is a good sweet spot. Versions under 5.5 may cause errors like what you saw and I know my stupid host often defaults new installs to 5.4 for some reason.
You can also check to see if it's a known issue in the open or closed queues at the github repo: https:/ / github.com/ kylewm/ KnownReactions/ issues
Otherwise cut/paste the error(s) into the issue queue in the repo to see what what others in the community think it could be.
Chris Aldrich, Jan 09 2017 on stream.boffosocko.com