Xerox has removed Linux drivers for some older models, specifically I spotted Phaser 3020, Phaser 3140, and WorkCentre 6025.
The pages were still accessible this afternoon, but the download links returned 404 errors, and now the pages themselves are unavailable (here are two examples from a search engine which are still indexed: https://www.support.xerox.com/ru-ua/product/phaser-3020/content/129574, https://www.support.xerox.com/en-us/content/129620)
Back up your drivers! They’ll likely remove them for Windows/macOS soon too! I can’t find the original Linux driver file for the 6025 anymore, archive.org doesn’t have it!
People on forums ask what has happened, to moderator only to reply that these products are EOL.