I've noticed that a large number of communities on Lemmy.world aren't visible here. You only get a 404. I've noticed this when looking at US state communities:
it may be related to the ongoing federation problems. https://fedia.io/m/[email protected] is working now for me. there are no posts in it yet on our instance because no one had subscribed to it until now.
Thanks for the investigation and tips. I was able to see it by querying the substring you mentioned.
I didn’t even think this thread herein posted. Got the 500 error a couple times when posting here and in mdev, and gave up. I forgot that error 500 often happens /after/ the task executes, hence some dupe threads.