erro no pipenv update

gistfile1.txt

(partyou-desafio) [alison@metanoia partyou]$ pipenv update
Running $ pipenv lock then $ pipenv sync.
Locking [dev-packages] dependencies…
Traceback (most recent call last):
  File "/home/alison/.pyenv/versions/3.7.2/bin/pipenv", line 11, in <module>
    sys.exit(cli())
  File "/home/alison/.pyenv/versions/3.7.2/lib/python3.7/site-packages/pipenv/vendor/click/core.py", line 764, in __call__
    return self.main(*args, **kwargs)
  File "/home/alison/.pyenv/versions/3.7.2/lib/python3.7/site-packages/pipenv/vendor/click/core.py", line 717, in main
    rv = self.invoke(ctx)
  File "/home/alison/.pyenv/versions/3.7.2/lib/python3.7/site-packages/pipenv/vendor/click/core.py", line 1137, in invoke
    return _process_result(sub_ctx.command.invoke(sub_ctx))
  File "/home/alison/.pyenv/versions/3.7.2/lib/python3.7/site-packages/pipenv/vendor/click/core.py", line 956, in invoke
    return ctx.invoke(self.callback, **ctx.params)
  File "/home/alison/.pyenv/versions/3.7.2/lib/python3.7/site-packages/pipenv/vendor/click/core.py", line 555, in invoke
    return callback(*args, **kwargs)
  File "/home/alison/.pyenv/versions/3.7.2/lib/python3.7/site-packages/pipenv/vendor/click/decorators.py", line 64, in new_func
    return ctx.invoke(f, obj, *args, **kwargs)
  File "/home/alison/.pyenv/versions/3.7.2/lib/python3.7/site-packages/pipenv/vendor/click/core.py", line 555, in invoke
    return callback(*args, **kwargs)
  File "/home/alison/.pyenv/versions/3.7.2/lib/python3.7/site-packages/pipenv/vendor/click/decorators.py", line 17, in new_func
    return f(get_current_context(), *args, **kwargs)
  File "/home/alison/.pyenv/versions/3.7.2/lib/python3.7/site-packages/pipenv/cli/command.py", line 514, in update
    pypi_mirror=state.pypi_mirror,
  File "/home/alison/.pyenv/versions/3.7.2/lib/python3.7/site-packages/pipenv/core.py", line 1055, in do_lock
    packages, project, r=False, include_index=True
  File "/home/alison/.pyenv/versions/3.7.2/lib/python3.7/site-packages/pipenv/utils.py", line 828, in convert_deps_to_pip
    indexes = project.sources if hasattr(project, "sources") else []
  File "/home/alison/.pyenv/versions/3.7.2/lib/python3.7/site-packages/pipenv/project.py", line 862, in sources
    if self.lockfile_exists and hasattr(self.lockfile_content, "keys"):
  File "/home/alison/.pyenv/versions/3.7.2/lib/python3.7/site-packages/pipenv/project.py", line 615, in lockfile_content
    return self.load_lockfile()
  File "/home/alison/.pyenv/versions/3.7.2/lib/python3.7/site-packages/pipenv/project.py", line 999, in load_lockfile
    j = json.load(lock)
  File "/home/alison/.pyenv/versions/3.7.2/lib/python3.7/json/__init__.py", line 296, in load
    parse_constant=parse_constant, object_pairs_hook=object_pairs_hook, **kw)
  File "/home/alison/.pyenv/versions/3.7.2/lib/python3.7/json/__init__.py", line 348, in loads
    return _default_decoder.decode(s)
  File "/home/alison/.pyenv/versions/3.7.2/lib/python3.7/json/decoder.py", line 337, in decode
    obj, end = self.raw_decode(s, idx=_w(s, 0).end())
  File "/home/alison/.pyenv/versions/3.7.2/lib/python3.7/json/decoder.py", line 353, in raw_decode
    obj, end = self.scan_once(s, idx)
json.decoder.JSONDecodeError: Expecting ',' delimiter: line 213 column 17 (char 11172)