Descripiton
When using a datapack with custom worldgen settings and having a biome with a "minecraft:ore" feature and "minecraft:tag_match" predicate crashes the game upon creating a new world.
I included the datapack in attached files (extract_me.zip).
The datapack works as expected in 1.16.2 pre-release 1.
Notes
The game chrashes whether you use your own or built-in block tags.
If you use a non-existing block tag, the world generates without the feature.
If you use the "minecraft:block_match" predicate type, the world generates with the feature.
Crash is the same as in MC-197223 - what is likely happening is that the configuration of the files just is not valid, which at the moment crashes the game instead of just giving an error message when creating the world.