No module omegaconf

trying to launch this example:
uv run python run.py --local --games pokemon_red
I got ROM file (pokered.gb)

got this error (actually in all examples):
Traceback (most recent call last):
File “E:\Projects\orak-2025-starter-kit\evaluation_utils\mcp_game_servers\pokemon_red\server.py”, line 3, in
from mcp_game_servers.base_server import *
File “E:\Projects\orak-2025-starter-kit\evaluation_utils\mcp_game_servers\base_server.py”, line 7, in
import omegaconf
ModuleNotFoundError: No module named ‘omegaconf’

but I sure there is omegaconf module installed. The same interpreter but on empty script with import omegaconf works.
Are there limitations on windows?