Investigate federation problems

[Nutomic]

• Peertube (also see Fix for Peertube federation #6217)

When fetching a Peertube channel for the first time, it should parse the videos listed in the outbox and import those as well. This is currently failing for some reason, and the search page loads forever.

To reproduce:

1. Go to search page
2. Search for https://video.blender.org/c/blender_channel/videos

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• NodeBB
  Some recent posts from NodeBB are missing on lemmy.ml. Some of these were moved from another community which is not supported by Lemmy yet (Move posts from one community to another. #2345), others look like normal posts created by Mastodon users.

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• Wordpress
  Fetching from Wordpress is failing:

curl "http://localhost:8536/api/v4/resolve_object?q=https://dbzer0.com/blog/an-epic-3d-printed-fan-expansion-for-last-light/" | jq
...
unknown variant `Hashtag`, expected `CommunityPostTag` at line 1 column 3612