Generate podzol inside coarse_dirt patch

Here is the .json file { "type": "minecraft:random_patch", "config": { "feature": { "feature": { "type": "minecraft:simple_block", "config": { "to_place": { "type": "minecraft:simple_state_provider", "state": { "Name": "minecraft:coarse_dirt" } } } }, "placement": [ { "type": "minecraft:block_predicate_filter", "predicate": { "type": "minecraft:matching_blocks", "blocks": "minecraft:grass_block" } } ] }, "tries": 128, "xz_spread": 5, "y_spread": 1 } } I've tried different ways but I'm still getting errors on console when restarting This is how it currently generates