pip install rembg 진행 시 아래 로그 발생합니다.
이후 실행해도 rembg관련 오류가 발생합니다.

설치로그
root@goorm:/workspace/nooggiServer# pip install rembg
Collecting rembg
Using cached rembg-1.0.14.tar.gz (13 kB)
Installing build dependencies ... done
Getting requirements to build wheel ... done
Preparing wheel metadata ... done
Requirement already satisfied: flask==1.1.2 in /usr/local/lib/python3.7/site-packages (from rembg) (1.1.2)
Collecting scipy==1.5.2
Downloading scipy-1.5.2-cp37-cp37m-manylinux1_x86_64.whl (25.9 MB)
|████████████████████████████████| 25.9 MB 2.2 kB/s
Collecting torch==1.6.0
Downloading torch-1.6.0-cp37-cp37m-manylinux1_x86_64.whl (748.8 MB)
|████████████████████████████████| 748.8 MB 2.2 kB/s
Requirement already satisfied: scikit-image==0.17.2 in /usr/local/lib/python3.7/site-packages (from rembg) (0.17.2)
Collecting waitress==1.4.4
Using cached waitress-1.4.4-py2.py3-none-any.whl (58 kB)
Collecting torchvision==0.7.0
Downloading torchvision-0.7.0-cp37-cp37m-manylinux1_x86_64.whl (5.9 MB)
|████████████████████████████████| 5.9 MB 19.1 MB/s
Collecting numpy==1.19.1
Using cached numpy-1.19.1-cp37-cp37m-manylinux2010_x86_64.whl (14.5 MB)
Requirement already satisfied: requests==2.24.0 in /usr/local/lib/python3.7/site-packages (from rembg) (2.24.0)
Collecting pymatting==1.0.6
Downloading PyMatting-1.0.6-py3-none-any.whl (40 kB)
|████████████████████████████████| 40 kB 2.5 MB/s
Collecting pillow==7.2.0
Using cached Pillow-7.2.0-cp37-cp37m-manylinux1_x86_64.whl (2.2 MB)
Collecting tqdm==4.48.2
Downloading tqdm-4.48.2-py2.py3-none-any.whl (68 kB)
|████████████████████████████████| 68 kB 3.4 MB/s
Requirement already satisfied: itsdangerous>=0.24 in /usr/local/lib/python3.7/site-packages (from flask==1.1.2->rembg) (1.1.0)
Requirement already satisfied: Werkzeug>=0.15 in /usr/local/lib/python3.7/site-packages (from flask==1.1.2->rembg) (1.0.1)
Requirement already satisfied: click>=5.1 in /usr/local/lib/python3.7/site-packages (from flask==1.1.2->rembg) (7.1.2)
Requirement already satisfied: Jinja2>=2.10.1 in /usr/local/lib/python3.7/site-packages (from flask==1.1.2->rembg) (2.11.2)
Collecting future
Downloading future-0.18.2.tar.gz (829 kB)
|████████████████████████████████| 829 kB 36.6 MB/s
Requirement already satisfied: networkx>=2.0 in /usr/local/lib/python3.7/site-packages (from scikit-image==0.17.2->rembg) (2.5)
Requirement already satisfied: matplotlib!=3.0.0,>=2.0.0 in /usr/local/lib/python3.7/site-packages (from scikit-image==0.17.2->rembg) (3.3.2)
Requirement already satisfied: imageio>=2.3.0 in /usr/local/lib/python3.7/site-packages (from scikit-image==0.17.2->rembg) (2.9.0)
Requirement already satisfied: tifffile>=2019.7.26 in /usr/local/lib/python3.7/site-packages (from scikit-image==0.17.2->rembg) (2020.10.1)
Requirement already satisfied: PyWavelets>=1.1.1 in /usr/local/lib/python3.7/site-packages (from scikit-image==0.17.2->rembg) (1.1.1)
Requirement already satisfied: idna<3,>=2.5 in /usr/local/lib/python3.7/site-packages (from requests==2.24.0->rembg) (2.10)
Requirement already satisfied: urllib3!=1.25.0,!=1.25.1,<1.26,>=1.21.1 in /usr/local/lib/python3.7/site-packages (from requests==2.24.0->rembg) (1.25.11)
Requirement already satisfied: chardet<4,>=3.0.2 in /usr/local/lib/python3.7/site-packages (from requests==2.24.0->rembg) (3.0.4)
Requirement already satisfied: certifi>=2017.4.17 in /usr/local/lib/python3.7/site-packages (from requests==2.24.0->rembg) (2020.6.20)
Requirement already satisfied: numba>=0.47.0 in /usr/local/lib/python3.7/site-packages (from pymatting==1.0.6->rembg) (0.51.2)
Requirement already satisfied: MarkupSafe>=0.23 in /usr/local/lib/python3.7/site-packages (from Jinja2>=2.10.1->flask==1.1.2->rembg) (1.1.1)
Requirement already satisfied: decorator>=4.3.0 in /usr/local/lib/python3.7/site-packages (from networkx>=2.0->scikit-image==0.17.2->rembg) (4.4.2)
Requirement already satisfied: kiwisolver>=1.0.1 in /usr/local/lib/python3.7/site-packages (from matplotlib!=3.0.0,>=2.0.0->scikit-image==0.17.2->rembg) (1.3.1)
Requirement already satisfied: pyparsing!=2.0.4,!=2.1.2,!=2.1.6,>=2.0.3 in /usr/local/lib/python3.7/site-packages (from matplotlib!=3.0.0,>=2.0.0->scikit-image==0.17.2->rembg) (2.4.7)
Requirement already satisfied: cycler>=0.10 in /usr/local/lib/python3.7/site-packages (from matplotlib!=3.0.0,>=2.0.0->scikit-image==0.17.2->rembg) (0.10.0)
Requirement already satisfied: python-dateutil>=2.1 in /usr/local/lib/python3.7/site-packages (from matplotlib!=3.0.0,>=2.0.0->scikit-image==0.17.2->rembg) (2.8.1)
Requirement already satisfied: setuptools in /usr/local/lib/python3.7/site-packages (from numba>=0.47.0->pymatting==1.0.6->rembg) (50.3.2)
Requirement already satisfied: llvmlite<0.35,>=0.34.0.dev0 in /usr/local/lib/python3.7/site-packages (from numba>=0.47.0->pymatting==1.0.6->rembg) (0.34.0)
Requirement already satisfied: six in /usr/local/lib/python3.7/site-packages (from cycler>=0.10->matplotlib!=3.0.0,>=2.0.0->scikit-image==0.17.2->rembg) (1.15.0)
Building wheels for collected packages: rembg, future
Building wheel for rembg (PEP 517) ... done
Created wheel for rembg: filename=rembg-1.0.14-py3-none-any.whl size=12392 sha256=91bd3bb28221b730d905627538d9dcfcd1bdae9b7c552f9cdc5f115432296082
Stored in directory: /root/.cache/pip/wheels/a7/2c/55/866186a0a9541a8879151d1d0ca8f2b8e4182fda0fda2bf8bc
Building wheel for future (setup.py) ... done
Created wheel for future: filename=future-0.18.2-py3-none-any.whl size=491059 sha256=713de8974b424fd2dfe2a5feb2fe357a99c8f44a8356e74de57caba16c8c9367
Stored in directory: /root/.cache/pip/wheels/56/b0/fe/4410d17b32f1f0c3cf54cdfb2bc04d7b4b8f4ae377e2229ba0
Successfully built rembg future
Installing collected packages: numpy, scipy, future, torch, waitress, pillow, torchvision, pymatting, tqdm, rembg
Attempting uninstall: numpy
Found existing installation: numpy 1.19.4
Uninstalling numpy-1.19.4:
Successfully uninstalled numpy-1.19.4
Attempting uninstall: scipy
Found existing installation: scipy 1.5.3
Uninstalling scipy-1.5.3:
Successfully uninstalled scipy-1.5.3
Attempting uninstall: torch
Found existing installation: torch 1.8.0+cpu
Uninstalling torch-1.8.0+cpu:
Successfully uninstalled torch-1.8.0+cpu
Attempting uninstall: pillow
Found existing installation: Pillow 8.0.1
Uninstalling Pillow-8.0.1:
Successfully uninstalled Pillow-8.0.1
Attempting uninstall: torchvision
Found existing installation: torchvision 0.9.0+cpu
Uninstalling torchvision-0.9.0+cpu:
Successfully uninstalled torchvision-0.9.0+cpu
Attempting uninstall: tqdm
Found existing installation: tqdm 4.51.0
Uninstalling tqdm-4.51.0:
Successfully uninstalled tqdm-4.51.0
ERROR: After October 2020 you may experience errors when installing or updating packages. This is because pip will change the way that it resolves dependency conflicts.

We recommend you use --use-feature=2020-resolver to test your packages with the new resolver before it becomes the default.

torchaudio 0.8.0 requires torch==1.8.0, but you'll have torch 1.6.0 which is incompatible.
tensorflow 2.3.1 requires h5py<2.11.0,>=2.10.0, but you'll have h5py 3.0.0 which is incompatible.
tensorflow 2.3.1 requires numpy<1.19.0,>=1.16.0, but you'll have numpy 1.19.1 which is incompatible.

실행시 결과
root@goorm:/workspace/nooggiServer# cd "/workspace/nooggiServer";
root@goorm:/workspace/nooggiServer# cd "/workspace/nooggiServer" && python "app.py"
Traceback (most recent call last):
File "app.py", line 2, in <module>
from rembg.bg import remove
File "/usr/local/lib/python3.7/site-packages/rembg/bg.py", line 67, in <module>
@functools.lru_cache
File "/usr/local/lib/python3.7/functools.py", line 490, in lru_cache
raise TypeError('Expected maxsize to be an integer or None')
TypeError: Expected maxsize to be an integer or None