Traceback (most recent call last):


 "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/pipenv/resolver.py", line 764, in <module>

main()


 "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/pipenv/resolver.py", line 760, in main

dev=parsed.dev)


 "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/pipenv/resolver.py", line 741, in _main

resolve_packages(pre, clear, verbose, system, write, requirements_dir, packages, dev)


 "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/pipenv/resolver.py", line 709, in resolve_packages

requirements_dir=requirements_dir,


 "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/pipenv/resolver.py", line 692, in resolve

req_dir=requirements_dir


 "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/pipenv/utils.py", line 1403, in resolve_deps

req_dir=req_dir,


 "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/pipenv/utils.py", line 1110, in actually_resolve_deps

resolver.resolve_constraints()


 "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/pipenv/utils.py", line 862, in resolve_constraints

marker = marker_from_specifier(candidate.requires_python)


 "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/pipenv/vendor/requirementslib/models/markers.py", line 719, in marker_from_specifier

for marker_segment in cleanup_pyspecs(spec):


 "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/pipenv/vendor/requirementslib/models/markers.py", line 288, in cleanup_pyspecs

for op_and_version_type, versions in _group_by_op(tuple(specs)):


 "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/pipenv/vendor/requirementslib/models/markers.py", line 203, in _group_by_op

specs = [_get_specs(x) for x in list(specs)]


 "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/pipenv/vendor/requirementslib/models/markers.py", line 203, in <listcomp>

specs = [_get_specs(x) for x in list(specs)]


 "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/pipenv/vendor/requirementslib/models/markers.py", line 187, in _get_specs

for spec in set(specset):
TypeError: 'LegacySpecifier' object is not iterable

Traceback (most recent call last):


 "/usr/local/lib/python3.8/site-packages/pyemby/server.py", line 287, in socket_connection

self.process_msg(msg.data)


 "/usr/local/lib/python3.8/site-packages/pyemby/server.py", line 319, in process_msg

self.update_device_list(self._sessions)


 "/usr/local/lib/python3.8/site-packages/pyemby/server.py", line 342, in update_device_list

dev_name, device['NowPlayingItem']['Type'],
TypeError: 'NoneType' object is not subscriptable
