Re: trending communities, if a link gives you this error:
The server returned this error: FetchError: invalid json response body at http://lemmy:8536/api/v3/post/list?community_name=exchristian%40lemmy.one&page=1&limit=20&sort=New&type_=All. This may be useful for admins and developers to diagnose and fix the error
that's just a timeout that's usually resolved by a refresh. It'll happen more often with links from that list than elsewhere, because it's more likely to provide links that no-one else on feddit.nl has visited before.
I just had a click around on the latest post, and that was the only error I got. If it's not that though, please leave a comment. I'm on the same instance as you, so can investigate what the problem might be, and it's my bot, so can try to fix it if need be.
EDIT: Issue is fixed now, thank you.
~~I'm not sure anything from this instance is federating anywhere since this change.~~
~~Looking at activitypub, attempting to subscribe to something gets no reply (the screenshot below shows me trying with 3 different communities, followed by what's expected to happen with a random community on another 0.19 instance)~~
~~Looking at an active community (like nuclear@feddit.nl), there's been 6 posts in the past 2 days that aren't showing up anywhere else (at <whatever_instance>/c/nuclear@feddit.nl)~~