error after running first cell of the notebook training.ipynb

[matheus-giordani]

I was following this tutorial, I started Docker as described in the tutorial and ran the first cell of the training.ipynb notebook and received this error
can anybody help me?

Collecting imgaug==0.2.6
  Downloading https://files.pythonhosted.org/packages/ad/2e/748dbb7bb52ec8667098bae9b585f448569ae520031932687761165419a2/imgaug-0.2.6.tar.gz (631kB)
     |████████████████████████████████| 634kB 4.2MB/s eta 0:00:01
Collecting opencv-python
  Downloading https://files.pythonhosted.org/packages/4a/e7/b70a2d9ab205110d715906fc8ec83fbb00404aeb3a37a0654fdb68eb0c8c/opencv-python-4.10.0.84.tar.gz (95.1MB)
     |████████████████████████████████| 95.1MB 34.0MB/s eta 0:00:01
  Installing build dependencies ... error
  ERROR: Command errored out with exit status 1:
   command: /usr/bin/python3 /usr/local/lib/python3.6/dist-packages/pip install --ignore-installed --no-user --prefix /tmp/pip-build-env-tgq4x5an/overlay --no-warn-script-location --no-binary :none: --only-binary :none: -i https://pypi.org/simple -- 'cmake>=3.1' 'numpy==1.13.3; python_version=='"'"'3.6'"'"' and platform_machine != '"'"'aarch64'"'"' and platform_machine != '"'"'arm64'"'"'' 'numpy==1.17.0; python_version=='"'"'3.7'"'"' and platform_machine != '"'"'aarch64'"'"' and platform_machine != '"'"'arm64'"'"'' 'numpy==1.17.5; python_version=='"'"'3.8'"'"' and platform_machine != '"'"'aarch64'"'"' and platform_machine != '"'"'arm64'"'"'' 'numpy==1.19.3; python_version<'"'"'3.9'"'"' and sys_platform == '"'"'linux'"'"' and platform_machine == '"'"'aarch64'"'"'' 'numpy==1.21.0; python_version<'"'"'3.9'"'"' and sys_platform == '"'"'darwin'"'"' and platform_machine == '"'"'arm64'"'"'' 'numpy>=2.0.0;  python_version>='"'"'3.9'"'"'' pip 'scikit-build>=0.14.0' setuptools==59.2.0
       cwd: None
  Complete output (14 lines):
  Traceback (most recent call last):
    File "/usr/lib/python3.6/runpy.py", line 193, in _run_module_as_main
      "__main__", mod_spec)
    File "/usr/lib/python3.6/runpy.py", line 85, in _run_code
      exec(code, run_globals)
    File "/usr/local/lib/python3.6/dist-packages/pip/__main__.py", line 16, in <module>
      from pip._internal.main import main as _main  # isort:skip # noqa
    File "/usr/local/lib/python3.6/dist-packages/pip/_internal/main.py", line 8, in <module>
      import locale
    File "/usr/lib/python3.6/locale.py", line 16, in <module>
      import re
    File "/usr/lib/python3.6/re.py", line 142, in <module>
      class RegexFlag(enum.IntFlag):
  AttributeError: module 'enum' has no attribute 'IntFlag'
  ----------------------------------------
ERROR: Command errored out with exit status 1: /usr/bin/python3 /usr/local/lib/python3.6/dist-packages/pip install --ignore-installed --no-user --prefix /tmp/pip-build-env-tgq4x5an/overlay --no-warn-script-location --no-binary :none: --only-binary :none: -i https://pypi.org/simple -- 'cmake>=3.1' 'numpy==1.13.3; python_version=='"'"'3.6'"'"' and platform_machine != '"'"'aarch64'"'"' and platform_machine != '"'"'arm64'"'"'' 'numpy==1.17.0; python_version=='"'"'3.7'"'"' and platform_machine != '"'"'aarch64'"'"' and platform_machine != '"'"'arm64'"'"'' 'numpy==1.17.5; python_version=='"'"'3.8'"'"' and platform_machine != '"'"'aarch64'"'"' and platform_machine != '"'"'arm64'"'"'' 'numpy==1.19.3; python_version<'"'"'3.9'"'"' and sys_platform == '"'"'linux'"'"' and platform_machine == '"'"'aarch64'"'"'' 'numpy==1.21.0; python_version<'"'"'3.9'"'"' and sys_platform == '"'"'darwin'"'"' and platform_machine == '"'"'arm64'"'"'' 'numpy>=2.0.0;  python_version>='"'"'3.9'"'"'' pip 'scikit-build>=0.14.0' setuptools==59.2.0 Check the logs for full command output.
WARNING: You are using pip version 19.3.1; however, version 21.3.1 is available.
You should consider upgrading via the 'pip install --upgrade pip' command.
Reading package lists... Done
Building dependency tree       
Reading state information... Done
The following additional packages will be installed:
  fontconfig-config fonts-dejavu-core libbsd0 libfreetype6 libice6 libpng16-16
  libx11-6 libx11-data libxau6 libxcb1 libxdmcp6 multiarch-support ucf
  x11-common
The following NEW packages will be installed:
  fontconfig-config fonts-dejavu-core libbsd0 libfontconfig1 libfreetype6
  libice6 libpng16-16 libsm6 libx11-6 libx11-data libxau6 libxcb1 libxdmcp6
  libxext6 libxrender1 multiarch-support ucf x11-common
0 upgraded, 18 newly installed, 0 to remove and 1 not upgraded.
Need to get 2717 kB of archives.
After this operation, 9809 kB of additional disk space will be used.
Get:1 http://archive.ubuntu.com/ubuntu bionic/main amd64 multiarch-support amd64 2.27-3ubuntu1 [6916 B]
Get:2 http://archive.ubuntu.com/ubuntu bionic/main amd64 libxau6 amd64 1:1.0.8-1 [8376 B]
Get:3 http://archive.ubuntu.com/ubuntu bionic/main amd64 libbsd0 amd64 0.8.7-1 [41.5 kB]
Get:4 http://archive.ubuntu.com/ubuntu bionic/main amd64 libxdmcp6 amd64 1:1.1.2-3 [10.7 kB]
Get:5 http://archive.ubuntu.com/ubuntu bionic-updates/main amd64 libxcb1 amd64 1.13-2~ubuntu18.04 [45.5 kB]
Err:6 http://archive.ubuntu.com/ubuntu bionic-updates/main amd64 libx11-data all 2:1.6.4-3ubuntu0.2
  404  Not Found [IP: 91.189.91.82 80]
Err:7 http://archive.ubuntu.com/ubuntu bionic-updates/main amd64 libx11-6 amd64 2:1.6.4-3ubuntu0.2
  404  Not Found [IP: 91.189.91.82 80]
Get:8 http://archive.ubuntu.com/ubuntu bionic/main amd64 libxext6 amd64 2:1.3.3-1 [29.4 kB]
Get:9 http://archive.ubuntu.com/ubuntu bionic-updates/main amd64 x11-common all 1:7.7+19ubuntu7.1 [22.5 kB]
Get:10 http://archive.ubuntu.com/ubuntu bionic/main amd64 libice6 amd64 2:1.0.9-2 [40.2 kB]
Get:11 http://archive.ubuntu.com/ubuntu bionic/main amd64 libsm6 amd64 2:1.2.2-1 [15.8 kB]
Get:12 http://archive.ubuntu.com/ubuntu bionic/main amd64 ucf all 3.0038 [50.5 kB]
Get:13 http://archive.ubuntu.com/ubuntu bionic-updates/main amd64 libpng16-16 amd64 1.6.34-1ubuntu0.18.04.2 [176 kB]
Get:14 http://archive.ubuntu.com/ubuntu bionic/main amd64 fonts-dejavu-core all 2.37-1 [1041 kB]
Get:15 http://archive.ubuntu.com/ubuntu bionic/main amd64 fontconfig-config all 2.12.6-0ubuntu2 [55.8 kB]
Get:16 http://archive.ubuntu.com/ubuntu bionic/main amd64 libfreetype6 amd64 2.8.1-2ubuntu2 [335 kB]
Get:17 http://archive.ubuntu.com/ubuntu bionic/main amd64 libfontconfig1 amd64 2.12.6-0ubuntu2 [137 kB]
Get:18 http://archive.ubuntu.com/ubuntu bionic/main amd64 libxrender1 amd64 1:0.9.10-1 [18.7 kB]
Fetched 2034 kB in 2s (1295 kB/s)      
E: Failed to fetch http://archive.ubuntu.com/ubuntu/pool/main/libx/libx11/libx11-data_1.6.4-3ubuntu0.2_all.deb  404  Not Found [IP: 91.189.91.82 80]
E: Failed to fetch http://archive.ubuntu.com/ubuntu/pool/main/libx/libx11/libx11-6_1.6.4-3ubuntu0.2_amd64.deb  404  Not Found [IP: 91.189.91.82 80]
E: Unable to fetch some archives, maybe run apt-get update or try with --fix-missing? 

[matheus-giordani]

I found the solution, just run this piece of code before running the first cell and change sklearn in the requirements.txt file to scikit-learn

!pip install --upgrade pip
!pip uninstall enum34 -y
!apt-get install -f --fix-missing

requirements.txt

imgaug==0.2.6
opencv-python
Pillow
requests
tqdm
scikit-learn
pytest-cov
codecov
matplotlib