The bug I have been exposed to is a bug that says the game is adding a pack to a world with no actual packs apart from the normal Minecraft pack and then later crashes

The game bug I experienced was it would come up with a notice before entering a world saying syncing pack with sever 1. It's not a sever 2. There's no pack and 3. It sons later crashes

Please fix this mojang I love this game it means the world to me