Though blank Cave Tablets (ones not bound to a biome, appearing with fully black runes and no biome in the item tooltip) shouldn't be able to spawn anyways (see: the issue I posted prior to this), attempting to place one in a Spelunkery Table causes Minecraft to crash with the following report: https://pastebin.com/TPFfECWZ

Trying to load the world after the crash gives me the "Invalid/Corrupted Data Packs" error, rendering the world essentially unplayable.