This has been resolved, new data is available now.

On Wed, Jun 1, 2022 at 9:44 AM Dan Andreescu <dandreescu@wikimedia.org> wrote:
Quick message to say that the data pipeline that feeds into Wikistats, mediawiki history dumps, and many datasets internal to wmf (like edit hourly), is blocked by a change to the production databases.  This might resolve in the next few days, but we don't have a lot of control over the resolution.  We hope the delay will be no longer than a week, but we'll keep this thread updated.