Custom Rigs that were previously working in Roblox are no longer accepted for import

I recently came across this error while trying to import custom rigs via avatar importer in Roblox:

I’m no longer able to import custom rigs that have been working in Roblox before. It seems like suddenly they’re no longer meeting the import requirements, but when I click on “Import requirements” link shown on the error, the page doesn’t exist so I’m kind of lost at the moment on what’s the issue. I’d appreciate any help, attaching screenshot from Maya scene:


This is an issue on Robloxs end (they’ve confirmed this), as a tempory workaround avoid using the name ‘Root’ for joints in your hierarchy.