Traceback (most recent call last):

  File "/home/maxime/miniconda3/envs/jlab-ipyleaflet/lib/python3.8/site-packages/pkg_resources/_vendor/packaging/requirements.py", line 98, in __init__
    req = REQUIREMENT.parseString(requirement_string)

  File "/home/maxime/miniconda3/envs/jlab-ipyleaflet/lib/python3.8/site-packages/pkg_resources/_vendor/pyparsing.py", line 1654, in parseString
    raise exc

  File "/home/maxime/miniconda3/envs/jlab-ipyleaflet/lib/python3.8/site-packages/pkg_resources/_vendor/pyparsing.py", line 1644, in parseString
    loc, tokens = self._parse( instring, 0 )

  File "/home/maxime/miniconda3/envs/jlab-ipyleaflet/lib/python3.8/site-packages/pkg_resources/_vendor/pyparsing.py", line 1402, in _parseNoCache
    loc,tokens = self.parseImpl( instring, preloc, doActions )

  File "/home/maxime/miniconda3/envs/jlab-ipyleaflet/lib/python3.8/site-packages/pkg_resources/_vendor/pyparsing.py", line 3417, in parseImpl
    loc, exprtokens = e._parse( instring, loc, doActions )

  File "/home/maxime/miniconda3/envs/jlab-ipyleaflet/lib/python3.8/site-packages/pkg_resources/_vendor/pyparsing.py", line 1406, in _parseNoCache
    loc,tokens = self.parseImpl( instring, preloc, doActions )

  File "/home/maxime/miniconda3/envs/jlab-ipyleaflet/lib/python3.8/site-packages/pkg_resources/_vendor/pyparsing.py", line 3205, in parseImpl
    raise ParseException(instring, loc, self.errmsg, self)

pkg_resources._vendor.pyparsing.ParseException: Expected stringEnd (at char 9), (line:1, col:10)

During handling of the above exception, another exception occurred:

Traceback (most recent call last):

  File "/home/maxime/miniconda3/envs/jlab-ipyleaflet/lib/python3.8/site-packages/jupyterlab/debuglog.py", line 47, in debug_logging
    yield

  File "/home/maxime/miniconda3/envs/jlab-ipyleaflet/lib/python3.8/site-packages/jupyterlab/labextensions.py", line 128, in start
    ans = self.run_task()

  File "/home/maxime/miniconda3/envs/jlab-ipyleaflet/lib/python3.8/site-packages/jupyterlab/labextensions.py", line 199, in run_task
    develop_labextension_py(arg, user=self.user, sys_prefix=self.sys_prefix, labextensions_dir=self.labextensions_dir, logger=self.log, overwrite=self.overwrite,

  File "/home/maxime/miniconda3/envs/jlab-ipyleaflet/lib/python3.8/site-packages/jupyterlab/federated_labextensions.py", line 135, in develop_labextension_py
    m, labexts = _get_labextension_metadata(module)

  File "/home/maxime/miniconda3/envs/jlab-ipyleaflet/lib/python3.8/site-packages/jupyterlab/federated_labextensions.py", line 384, in _get_labextension_metadata
    dist = pkg_resources.get_distribution(package)

  File "/home/maxime/miniconda3/envs/jlab-ipyleaflet/lib/python3.8/site-packages/pkg_resources/__init__.py", line 478, in get_distribution
    dist = Requirement.parse(dist)

  File "/home/maxime/miniconda3/envs/jlab-ipyleaflet/lib/python3.8/site-packages/pkg_resources/__init__.py", line 3164, in parse
    req, = parse_requirements(s)

  File "/home/maxime/miniconda3/envs/jlab-ipyleaflet/lib/python3.8/site-packages/pkg_resources/__init__.py", line 3109, in parse_requirements
    yield Requirement(line)

  File "/home/maxime/miniconda3/envs/jlab-ipyleaflet/lib/python3.8/site-packages/pkg_resources/__init__.py", line 3119, in __init__
    super(Requirement, self).__init__(requirement_string)

  File "/home/maxime/miniconda3/envs/jlab-ipyleaflet/lib/python3.8/site-packages/pkg_resources/_vendor/packaging/requirements.py", line 100, in __init__
    raise InvalidRequirement(

pkg_resources.extern.packaging.requirements.InvalidRequirement: Parse error at "'entered'": Expected stringEnd

Exiting application: lab