2020-05-20 18:02:39 ERROR (SyncWorker_17) [homeassistant.util.package] Unable to install package home-assistant-frontend==20200519.0: Traceback (most recent call last):


 "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/runpy.py", line 193, in _run_module_as_main

"__main__", mod_spec)


 "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/runpy.py", line 85, in _run_code

exec(code, run_globals)


 "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/pip/__main__.py", line 23, in <module>

from pip._internal.cli.main import main as _main
# isort:skip # noqa


 "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/pip/_internal/cli/main.py", line 10, in <module>

from pip._internal.cli.autocompletion import autocomplete


 "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/pip/_internal/cli/autocompletion.py", line 9, in <module>

from pip._internal.cli.main_parser import create_main_parser


 "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/pip/_internal/cli/main_parser.py", line 7, in <module>

from pip._internal.cli import cmdoptions


 "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/pip/_internal/cli/cmdoptions.py", line 24, in <module>

from pip._internal.cli.progress_bars import BAR_TYPES


 "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/pip/_internal/cli/progress_bars.py", line 12, in <module>

from pip._internal.utils.logging import get_indentation


 "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/pip/_internal/utils/logging.py", line 18, in <module>

from pip._internal.utils.misc import ensure_dir


 "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/pip/_internal/utils/misc.py", line 30, in <module>

from pip._internal.locations import (


 "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/pip/_internal/locations.py", line 21, in <module>

from pip._internal.utils.typing import MYPY_CHECK_RUNNING, cast
ImportError: cannot import name 'cast' from 'pip._internal.utils.typing' (/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/pip/_internal/utils/typing.py)

Traceback (most recent call last):


 "/home/wei/.emacs.d/emacs-application-framework/eaf.py", line 25, in <module>

from app.browser.buffer import AppBuffer as NeverUsed


 "/home/wei/.emacs.d/emacs-application-framework/app/browser/buffer.py", line 24, in <module>

from core.browser_buffer import BrowserBuffer


 "/home/wei/.emacs.d/emacs-application-framework/core/browser_buffer.py", line 22, in <module>

from core.browser import BrowserView, webview_scroll


 "/home/wei/.emacs.d/emacs-application-framework/core/browser.py", line 23, in <module>

from PyQt5 import QtWebEngineWidgets
ImportError: cannot import name 'QtWebEngineWidgets'
