This is actually a common issue that is caused by something in the new makecode update. Heres a post I made about it → Makecode Removing all SpriteKinds and varibles - #7 by Bifrosty
@a012 stop using Chatgpt to answer questions, especially if it just gives general tech advice. The issue is not related to the carnival extension at all, and your AI generated post is misleading. Only respond if you have something genuine to add.