cannot import name 'cached_property' from 'nougat.utils'

[nunamia]

I'm used python3.9 env

(venv) (base) marker dev % python3 convert_single.py /Users/nunamia/Documents/github/nougat/demo /Users/nunamia/Documents/github/nougat/demo/output.md
Traceback (most recent call last):
File "/Users/nunamia/Documents/github/marker/convert_single.py", line 3, in
from marker.convert import convert_single_pdf
File "/Users/nunamia/Documents/github/marker/marker/convert.py", line 6, in
from marker.cleaners.equations import replace_equations
File "/Users/nunamia/Documents/github/marker/marker/cleaners/equations.py", line 8, in
from nougat import NougatModel
File "/Users/nunamia/Documents/github/marker/venv/lib/python3.9/site-packages/nougat/init.py", line 1, in
from nougat.app import Nougat
File "/Users/nunamia/Documents/github/marker/venv/lib/python3.9/site-packages/nougat/app.py", line 5, in
from nougat.asgi import serve
File "/Users/nunamia/Documents/github/marker/venv/lib/python3.9/site-packages/nougat/asgi.py", line 6, in
from nougat.context.request import Request
File "/Users/nunamia/Documents/github/marker/venv/lib/python3.9/site-packages/nougat/context/init.py", line 1, in
from nougat.context.request import Request
File "/Users/nunamia/Documents/github/marker/venv/lib/python3.9/site-packages/nougat/context/request.py", line 8, in
from nougat.utils import cached_property, File
ImportError: cannot import name 'cached_property' from 'nougat.utils' (/Users/nunamia/Documents/github/marker/venv/lib/python3.9/site-packages/nougat/utils/init.py)

I search find this code:
https://github.com/Riparo/nougat/blob/8453bc37e0b782f296952f0a418532ebbbcd74f3/nougat/context/request.py#L81

But I checked the official version and there is no such part of the code.

the version is:
[[package]]
name = "nougat-ocr"
version = "0.1.17"
description = "Nougat: Neural Optical Understanding for Academic Documents"
optional = false
python-versions = ">=3.7"
files = [
{file = "nougat_ocr-0.1.17-py3-none-any.whl", hash = "sha256:f776732c716250972c7de11a47b36e94fa48e271d67045a427f19f12eeeef118"},
]

[nunamia]

nougat-ocr and nougat are not the same project?

[nunamia]

Fix this problem; don't install Nougat, just install Nougat-OCR.