FetchAllRepliesWorker: undefined method `UnexpectedResponseError`

[sneakers-the-rat]

Steps to reproduce the problem

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Expected behaviour

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Actual behaviour

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Detailed description

Seen in dead sidekiq tasks:

NoMethodError: undefined method `UnexpectedResponseError' for an instance of ActivityPub::FetchAllRepliesWorker

Mastodon instance

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Mastodon version

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Technical details

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