Received an update referencing an unknown peer, treating as gap

[xndrpr]

This log is sometimes received from a channel that is in user's dialogs, and user has subscribed to the channel.

The log:

10:19:59 [INFO] received an update referencing an unknown peer, treating as gap

The channel: @news_crypto

The code that doesn't work correctly:

lib > grammers_session > src > message_box > mod.rs:363