Can't load assets from local file system in replicator

Omniverse Synthetic Data Generation (SDG)
1

Project structure

rep/
  |__->assets/
  |       |___>Shrub/*.usd (flat only USD files)
  |
  |__->output/
  |__->sample.py

I’ve been trying to run headless replicator script that imports USD assets from local file system and random scatters them in scene

import omni.replicator.core as rep
import pathlib

with rep.new_layer():
    asset_path = pathlib.Path(__file__).parent.absolute() / "assets"
    GRASS = asset_path / 'Grass_Short_C.usd'
    VEG = asset_path / 'Shrub'
    TERRAIN = asset_path / 'Terrains'

    log_file = open("/_output/logs.txt", "w", encoding="utf-8")

    sphere_light = rep.create.light(
        light_type="Sphere",
        temperature=rep.distribution.normal(6500, 500),
        intensity=rep.distribution.normal(35000, 5000),
        position=rep.distribution.uniform((-300, -300, -300), (300, 300, 300)),
        scale=rep.distribution.uniform(50, 100),
        count=2
    )

    def load_and_place_shrubs(num_inst=50):
        veg_files = rep.utils.get_usd_files(str(VEG))
        plants = rep.randomizer.instantiate(veg_files, mode='point_instance', size=num_inst)
        with plants:
            rep.modify.pose(
                position=rep.distribution.uniform((-500, 0, -500), (500, 0, 500)),
                rotation=rep.distribution.uniform((-90,-180, 0), (-90, 180, 0)),
            )
        return plants.node

    rep.randomizer.register(load_and_place_shrubs)

    # Setup camera and attach it to render product
    camera = rep.create.camera(
        focus_distance=800,
        f_stop=0.5
    )
    render_product = rep.create.render_product(camera, resolution=(1920, 1080))

    # Initialize and attach writer
    writer = rep.WriterRegistry.get("BasicWriter")
    writer.initialize( output_dir="/root/_output/output", rgb=True,   bounding_box_2d_tight=True)
    writer.attach([render_product])

    with rep.trigger.on_frame(num_frames=10):
        # rep.randomizer.create_ground_plane()
        rep.randomizer.load_and_place_shrubs(75)
        # rep.randomizer.load_and_place_grass()
        with camera:
            rep.modify.pose(position=rep.distribution.uniform((-500, 200, 1000), (500, 500, 1500)), look_at=(0, 0, 0))

    rep.orchestrator.run()
    log_file.close()

Running Docker

docker run --gpus all --entrypoint /bin/bash -it -v $HOME/replicator/:/_output/ nvcr.io/nvidia/omniverse-replicator:1.4.7-r1

Inside docker

./startup.sh --allow-root --no-window --/omni/replicator/script=/_output/sample.py

But I get a bunch of errors and no synthetic data output
logs
log.txt (208.1 KB)

Can someone help me interpret the bug and logs?