Not sure if it's related, but there was the following issue in our tenant, this is taking from a health message (MC303287) posted on Dec. 9th.
We previously notified you of an issue via Service Health Dashboard post TM299667, wherein a configuration issue caused a subset of customers’ Microsoft Teams meeting recordings to not upload to SharePoint Online or OneDrive for Business as expected. Users would have seen a message stating: “Recording failed to upload.”
By design, uploading recordings to SharePoint Online or OneDrive for Business requires the passing of a user authentication token and we’re unable to re-trigger an automatic upload of affected recordings. While these recordings appear to have failed to upload, affected users can initiate a manual download activity.