What do I do after a restore without thumbnails? (missing images, avatars)

Is there an equivalent for rake posts:rebake for restoring avatars? That is what I ended up having to do to fix post images, but most avatars are still missing. I have tried triggering CreateMissingAvatars in Sidekiq and it runs for 5-10 seconds, but nothing changes.

My issues seem nearly identical to the ones in this topic, which unfortunately doesn’t seem to have a solution.