Reproduction Steps
Call the AssetService:CreatePlaceInPlayerInventoryAsync method on yourself in your own game or one you can clone.
game.AssetService:CreatePlaceInPlayerInventoryAsync(game.Players:GetPlayers()[1], "aaa", game.PlaceId, "")
Expected Behavior
The UI should not appear and perhaps the method should throw a new error stating that it is disabled, or just remove it entirely.
Actual Behavior
A UI appears when one should not. Press “yes” and you will see that a 404 is returned–this is because the API endpoint appears to be removed.
https://developer.roblox.com/en-us/resources/release-note/Release-Notes-for-471

Workaround
Remove the UI.
Issue Area: Engine
Issue Type: Display
Impact: Low
Frequency: Constantly