As of 2024-05-14 a change has been implemented to enforce access token expiry. If you see higher numbers of HTTP 401 responses, please check tokens that may have expired. For more details, including how to mitigate disruption, please check our docs guide on Expired Access Tokens. If you have a support contract, you may open a support ticket for additional assistance.
This was introduced in !2676 (merged) - seems the only place where this would cause issue is in the serialized values in the genesis export since this was released 2 versions ago and we've had no consensus failure.