Describe the bug
When building a datapack with genData, the withDefaults doesn't copy any data into any JSON files except items (the structure of the JSON is fine, just no data in it).

Expected behavior
The withDefaults option should export all data for each item type.

Ex:
generated_pack\data\minecraft\pmmo\blocks\coal_ore.json should have the following data in it:
https://github.com/Caltinor/Project-MMO-2.0/blob/main/src/main/resources/data/minecraft/pmmo/blocks/coal_ore.json

To Reproduce
Steps to reproduce the behavior:

1. New game
2. Run genData sequence using the withDefaults option
3. Check (for example) generated_pack\data\minecraft\pmmo\blocks\coal_ore.json
4. See error

Additional context
Seems to affect both the pre-1.19.4 build and post-1.19.4 build (though I haven't checked every single one).