Error message about not finding the Junk folder with v3?

Often, when I train a bunch of messages at once, I get the following error with Sonoma and the extension of Spamsieve:
Error finding Junk mailbox for message: Mail got an error: Can’t get message id 444302 of mailbox “INBOX” of account id “B56DC241-6852-4CAA-BD92-B6FE824E72C3”.

It still moves them to the correct folder, but it’s weird. Any ideas?

I wonder if you were training messages that had not been processed yet, and the error is because they were already moved by the time the training command went to move them. If the message is correctly moved to Junk, I think you can safely ignore this error in the log.