Basically T146631 again. :)
Go to https://wikimedia.biterg.io/goto/7ebb88c007cb7a9bac082256b9bc7f7a (Git-Demographics for last year)
- "Attracted Developers", "Last Commit Developers", "Developers Getting Inactive" widgets are empty
- "Last Attracted Developers" shows names that have been active for ages and the "First Commit Date" column is empty