pre-commit error

gistfile1.txt

fix_lint installed: aspy.yaml==1.1.1,cached-property==1.5.1,cfgv==1.1.0,identify==1.1.7,importlib-metadata==0.6,nodeenv==1.3.2,pre-commit==1.12.0,PyYAML==3.13,six==1.11.0,toml==0.10.0,virtualenv==16.0.0
fix_lint run-test-pre: PYTHONHASHSEED='643'
fix_lint runtests: commands[0] | pre-commit run --all-files --show-diff-on-failure
[INFO] Installing environment for https://github.com/ambv/black.
[INFO] Once installed this environment will be reused.
[INFO] This may take a few minutes...
An unexpected error has occurred: CalledProcessError: Command: ('C:\\Users\\berna\\.cache\\pre-commit\\repos2irookv\\py_env-python3.7\\Scripts\\pip.exe', 'install', '.')
Return code: 2
Expected return code: 0
Output:
    Processing c:\users\berna\.cache\pre-commit\repos2irookv

Errors:
    Exception:
    Traceback (most recent call last):
      File "c:\users\berna\.cache\pre-commit\repos2irookv\py_env-python3.7\lib\site-packages\pip\_internal\basecommand.py", line 228, in main
        status = self.run(options, args)
      File "c:\users\berna\.cache\pre-commit\repos2irookv\py_env-python3.7\lib\site-packages\pip\_internal\commands\install.py", line 291, in run
        resolver.resolve(requirement_set)
      File "c:\users\berna\.cache\pre-commit\repos2irookv\py_env-python3.7\lib\site-packages\pip\_internal\resolve.py", line 103, in resolve
        self._resolve_one(requirement_set, req)
      File "c:\users\berna\.cache\pre-commit\repos2irookv\py_env-python3.7\lib\site-packages\pip\_internal\resolve.py", line 257, in _resolve_one
        abstract_dist = self._get_abstract_dist_for(req_to_install)
      File "c:\users\berna\.cache\pre-commit\repos2irookv\py_env-python3.7\lib\site-packages\pip\_internal\resolve.py", line 210, in _get_abstract_dist_for
        self.require_hashes
      File "c:\users\berna\.cache\pre-commit\repos2irookv\py_env-python3.7\lib\site-packages\pip\_internal\operations\prepare.py", line 324, in prepare_linked_requirement
        abstract_dist.prep_for_dist(finder, self.build_isolation)
      File "c:\users\berna\.cache\pre-commit\repos2irookv\py_env-python3.7\lib\site-packages\pip\_internal\operations\prepare.py", line 126, in prep_for_dist
        build_requirements, isolate = self.req.get_pep_518_info()
      File "c:\users\berna\.cache\pre-commit\repos2irookv\py_env-python3.7\lib\site-packages\pip\_internal\req\req_install.py", line 448, in get_pep_518_info
        pp_toml = pytoml.load(f)
      File "c:\users\berna\.cache\pre-commit\repos2irookv\py_env-python3.7\lib\site-packages\pip\_vendor\pytoml\parser.py", line 10, in load
        return loads(fin.read(), translate=translate, filename=getattr(fin, 'name', repr(fin)))
      File "c:\users\berna\.cache\pre-commit\repos2irookv\py_env-python3.7\lib\encodings\cp1252.py", line 23, in decode
        return codecs.charmap_decode(input,self.errors,decoding_table)[0]
    UnicodeDecodeError: 'charmap' codec can't decode byte 0x81 in position 867: character maps to <undefined>
    You are using pip version 10.0.1, however version 18.1 is available.
    You should consider upgrading via the 'python -m pip install --upgrade pip' command.