Poetry [AttributeError] 'EmptyConstraint' object has no attribute 'min'

poetry-debug.log

01:48 $ poetry debug

Poetry
Version: 1.0.9
Python:  3.8.3

Virtualenv
Python:         3.8.3
Implementation: CPython
Path:           /Users/wagneraugusto/Library/Caches/pypoetry/virtualenvs/toggl-cli-bug-t9z0mPRw-py3.8
Valid:          True

System
Platform: darwin
OS:       posix
Python:   /Users/wagneraugusto/.pyenv/versions/3.8.3

poetry-update.log

01:48 $ poetry update -vvv
Using virtualenv: /Users/wagneraugusto/Library/Caches/pypoetry/virtualenvs/toggl-cli-bug-t9z0mPRw-py3.8
Updating dependencies
Resolving dependencies...
   1: fact: toggl-cli-bug is 0.1.0
   1: derived: toggl-cli-bug
   1: fact: toggl-cli-bug depends on togglCli (*)
   1: selecting toggl-cli-bug (0.1.0)
   1: derived: togglCli (*)
PyPI: 7 packages found for togglcli *
   1: fact: togglcli (2.2.0) requires Python >=3.6.0, <3.9.0
   1: derived: not togglcli (2.2.0)
   1: fact: togglcli (2.1.0) requires Python >=3.5.0, <3.8.0
   1: derived: not togglcli (2.1.0)
   1: fact: togglcli (2.0.2) requires Python >=3.5.0, <=3.7.*
   1: derived: not togglcli (2.0.2)
   1: fact: togglcli (2.0.1) requires Python >=3.5.0, <3.7.*
   1: derived: not togglcli (2.0.1)
   1: Version solving took 0.057 seconds.
   1: Tried 1 solutions.

[AttributeError]
'EmptyConstraint' object has no attribute 'min'

Traceback (most recent call last):
  File "/Users/wagneraugusto/.poetry/lib/poetry/_vendor/py3.8/clikit/console_application.py", line 131, in run
    status_code = command.handle(parsed_args, io)
  File "/Users/wagneraugusto/.poetry/lib/poetry/_vendor/py3.8/clikit/api/command/command.py", line 120, in handle
    status_code = self._do_handle(args, io)
  File "/Users/wagneraugusto/.poetry/lib/poetry/_vendor/py3.8/clikit/api/command/command.py", line 171, in _do_handle
    return getattr(handler, handler_method)(args, io, self)
  File "/Users/wagneraugusto/.poetry/lib/poetry/_vendor/py3.8/cleo/commands/command.py", line 92, in wrap_handle
    return self.handle()
  File "/Users/wagneraugusto/.poetry/lib/poetry/console/commands/update.py", line 49, in handle
    return installer.run()
  File "/Users/wagneraugusto/.poetry/lib/poetry/installation/installer.py", line 74, in run
    self._do_install(local_repo)
  File "/Users/wagneraugusto/.poetry/lib/poetry/installation/installer.py", line 161, in _do_install
    ops = solver.solve(use_latest=self._whitelist)
  File "/Users/wagneraugusto/.poetry/lib/poetry/puzzle/solver.py", line 36, in solve
    packages, depths = self._solve(use_latest=use_latest)
  File "/Users/wagneraugusto/.poetry/lib/poetry/puzzle/solver.py", line 180, in _solve
    result = resolve_version(
  File "/Users/wagneraugusto/.poetry/lib/poetry/mixology/__init__.py", line 7, in resolve_version
    return solver.solve()
  File "/Users/wagneraugusto/.poetry/lib/poetry/mixology/version_solver.py", line 80, in solve
    next = self._choose_package_version()
  File "/Users/wagneraugusto/.poetry/lib/poetry/mixology/version_solver.py", line 388, in _choose_package_version
    version = self._provider.complete_package(version)
  File "/Users/wagneraugusto/.poetry/lib/poetry/puzzle/provider.py", line 583, in complete_package
    self._pool.package(
  File "/Users/wagneraugusto/.poetry/lib/poetry/repositories/pool.py", line 115, in package
    package = repo.package(name, version, extras=extras)
  File "/Users/wagneraugusto/.poetry/lib/poetry/repositories/pypi_repository.py", line 196, in package
    package.python_versions = release_info["requires_python"]
  File "/Users/wagneraugusto/.poetry/lib/poetry/packages/package.py", line 191, in python_versions
    create_nested_marker("python_version", self._python_constraint)
  File "/Users/wagneraugusto/.poetry/lib/poetry/packages/utils/utils.py", line 213, in create_nested_marker
    if constraint.min is not None:

pyproject.toml

[tool.poetry]
name = "toggl-cli-bug"
version = "0.1.0"
description = ""
authors = ["Augusto W. Andreoli <andreoliwa@gmail.com>"]

[tool.poetry.dependencies]
python = "^3.7"
togglCli = "*"

[tool.poetry.dev-dependencies]

[build-system]
requires = ["poetry>=0.12"]
build-backend = "poetry.masonry.api"