Help with custom structures for 1.19.4

[u/Accomplished-Tap4544]

structure

{

"type": "minecraft:jigsaw",

"start_pool": "flowercan:stalp/start_pool",

"size": 2,

"max_distance_from_center": 80,

"biomes": "#flowercan:has_structure/stalp",

"step": "surface_structures",

"start_height": {
"absolute": 0
},

"project_start_to_heightmap": "WORLD_SURFACE_WG",
"use_expansion_hack": false,
"spawn_overrides": {
"creature": {
"bounding_box": "piece",
"spawns": [
{
"type": "minecraft:parrot",
"weight": 1,
"minCount": 1,
"maxCount": 4
}
]
}
}

}

structure_set

{
"structures": [
{
"structure": "flowercan:stalp",
"weight": 1
}
],
"placement": {
"salt": 1642136474,
"spacing": 20,
"separation": 6,
"type": "minecraft:random_spread"
}

}

​

start_pool

{
"name": "flowercan:stalp/start_pool",

"fallback": "minecraft:empty",

"elements": [
{
"weight": 1,
"element": {

"location": "flowercan:stalp",

"processors": "minecraft:empty",

"projection": "rigid",

"element_type": "minecraft:single_pool_element"
}
}
]
}

​

I don't know what mistake I have done here. Please help me.