Onebox not working

Can someone point me in the right direction as to why some of these onboxes are not working?

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This is forum I restored from a backup on a new server, with a new domain, so perhaps I need to rebake the posts to get this to “kick off”?

Interesting, it looks like the same thing is happening for YouTube.

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Is sidekiq working on your site? You can visit /sidekiq to check it.

From what I can tell here it is.

Anything interesting /logs?

Does not really look like it to my untrained eyes.