I just tested a new Prerelease 3 world with the updated datapack, and it works fine If you're creating or running a Prerelease 3 world, make sure you're using the correct version of the datapackThese where testedUpdate The fifth prerelease for 117 is now available, fixing another round of bugs and crashes THE CAVES & CLIFFS PREVIEW Download the latest datapack BUGS FIXED IN 117 PRERELEASE 5 MC Caves and Cliffs Datapacks Server Error;
Minecraft Snapshot 21w15a Minecraft Java Edition