New group system, makes an error loading animations

Hi. I removed a friend from the old group system and added him to the new one and gave him full access. But he started receiving messages in studio (Failed to load animation with sanitised ID rbxassetid…). Accordingly, the animations do not work in the studio. And if I add him to the old group system, he doesn’t get this message.

Expected behavior

The error should not appear in the new group system.
Failed to load animation with sanitised ID rbxassetid…