Pip ERROR: ERROR: Exception: Traceback (most recent call last):

Question

Try to run pip install requirements.txt in code dir. CMD Returns:

ERROR: Exception:
Traceback (most recent call last):
  File "C:\Users\Thishakya\AppData\Local\Programs\Python\Python310\lib\site-packages\pip\_internal\cli\base_command.py", line 173, in _main
    status = self.run(options, args)
  File "C:\Users\Thishakya\AppData\Local\Programs\Python\Python310\lib\site-packages\pip\_internal\cli\req_command.py", line 203, in wrapper
    return func(self, options, args)
  File "C:\Users\Thishakya\AppData\Local\Programs\Python\Python310\lib\site-packages\pip\_internal\commands\install.py", line 315, in run
    requirement_set = resolver.resolve(
  File "C:\Users\Thishakya\AppData\Local\Programs\Python\Python310\lib\site-packages\pip\_internal\resolution\resolvelib\resolver.py", line 94, in resolve
    result = self._result = resolver.resolve(
  File "C:\Users\Thishakya\AppData\Local\Programs\Python\Python310\lib\site-packages\pip\_vendor\resolvelib\resolvers.py", line 472, in resolve
    state = resolution.resolve(requirements, max_rounds=max_rounds)
  File "C:\Users\Thishakya\AppData\Local\Programs\Python\Python310\lib\site-packages\pip\_vendor\resolvelib\resolvers.py", line 341, in resolve
    self._add_to_criteria(self.state.criteria, r, parent=None)
  File "C:\Users\Thishakya\AppData\Local\Programs\Python\Python310\lib\site-packages\pip\_vendor\resolvelib\resolvers.py", line 172, in _add_to_criteria
    if not criterion.candidates:
  File "C:\Users\Thishakya\AppData\Local\Programs\Python\Python310\lib\site-packages\pip\_vendor\resolvelib\structs.py", line 151, in __bool__
    return bool(self._sequence)
  File "C:\Users\Thishakya\AppData\Local\Programs\Python\Python310\lib\site-packages\pip\_internal\resolution\resolvelib\found_candidates.py", line 140, in __bool__
    return any(self)
  File "C:\Users\Thishakya\AppData\Local\Programs\Python\Python310\lib\site-packages\pip\_internal\resolution\resolvelib\found_candidates.py", line 128, in <genexpr>
    return (c for c in iterator if id(c) not in self._incompatible_ids)
  File "C:\Users\Thishakya\AppData\Local\Programs\Python\Python310\lib\site-packages\pip\_internal\resolution\resolvelib\found_candidates.py", line 29, in _iter_built
    for version, func in infos:
  File "C:\Users\Thishakya\AppData\Local\Programs\Python\Python310\lib\site-packages\pip\_internal\resolution\resolvelib\factory.py", line 272, in iter_index_candidate_infos
    result = self._finder.find_best_candidate(
  File "C:\Users\Thishakya\AppData\Local\Programs\Python\Python310\lib\site-packages\pip\_internal\index\package_finder.py", line 851, in find_best_candidate
    candidates = self.find_all_candidates(project_name)
  File "C:\Users\Thishakya\AppData\Local\Programs\Python\Python310\lib\site-packages\pip\_internal\index\package_finder.py", line 798, in find_all_candidates
    page_candidates = list(page_candidates_it)
  File "C:\Users\Thishakya\AppData\Local\Programs\Python\Python310\lib\site-packages\pip\_internal\index\sources.py", line 134, in page_candidates
    yield from self._candidates_from_page(self._link)
  File "C:\Users\Thishakya\AppData\Local\Programs\Python\Python310\lib\site-packages\pip\_internal\index\package_finder.py", line 758, in process_project_url
    html_page = self._link_collector.fetch_page(project_url)
  File "C:\Users\Thishakya\AppData\Local\Programs\Python\Python310\lib\site-packages\pip\_internal\index\collector.py", line 490, in fetch_page
    return _get_html_page(location, session=self.session)
  File "C:\Users\Thishakya\AppData\Local\Programs\Python\Python310\lib\site-packages\pip\_internal\index\collector.py", line 400, in _get_html_page
    resp = _get_html_response(url, session=session)
  File "C:\Users\Thishakya\AppData\Local\Programs\Python\Python310\lib\site-packages\pip\_internal\index\collector.py", line 115, in _get_html_response
    resp = session.get(
  File "C:\Users\Thishakya\AppData\Local\Programs\Python\Python310\lib\site-packages\pip\_vendor\requests\sessions.py", line 555, in get
    return self.request('GET', url, **kwargs)
  File "C:\Users\Thishakya\AppData\Local\Programs\Python\Python310\lib\site-packages\pip\_internal\network\session.py", line 454, in request
    return super().request(method, url, *args, **kwargs)
  File "C:\Users\Thishakya\AppData\Local\Programs\Python\Python310\lib\site-packages\pip\_vendor\requests\sessions.py", line 542, in request
    resp = self.send(prep, **send_kwargs)
  File "C:\Users\Thishakya\AppData\Local\Programs\Python\Python310\lib\site-packages\pip\_vendor\requests\sessions.py", line 655, in send
    r = adapter.send(request, **kwargs)
  File "C:\Users\Thishakya\AppData\Local\Programs\Python\Python310\lib\site-packages\pip\_vendor\cachecontrol\adapter.py", line 53, in send
    resp = super(CacheControlAdapter, self).send(request, **kw)
  File "C:\Users\Thishakya\AppData\Local\Programs\Python\Python310\lib\site-packages\pip\_vendor\requests\adapters.py", line 439, in send
    resp = conn.urlopen(
  File "C:\Users\Thishakya\AppData\Local\Programs\Python\Python310\lib\site-packages\pip\_vendor\urllib3\connectionpool.py", line 696, in urlopen
    self._prepare_proxy(conn)
  File "C:\Users\Thishakya\AppData\Local\Programs\Python\Python310\lib\site-packages\pip\_vendor\urllib3\connectionpool.py", line 964, in _prepare_proxy
    conn.connect()
  File "C:\Users\Thishakya\AppData\Local\Programs\Python\Python310\lib\site-packages\pip\_vendor\urllib3\connection.py", line 359, in connect
    conn = self._connect_tls_proxy(hostname, conn)
  File "C:\Users\Thishakya\AppData\Local\Programs\Python\Python310\lib\site-packages\pip\_vendor\urllib3\connection.py", line 500, in _connect_tls_proxy
    return ssl_wrap_socket(
  File "C:\Users\Thishakya\AppData\Local\Programs\Python\Python310\lib\site-packages\pip\_vendor\urllib3\util\ssl_.py", line 453, in ssl_wrap_socket
    ssl_sock = _ssl_wrap_socket_impl(sock, context, tls_in_tls)
  File "C:\Users\Thishakya\AppData\Local\Programs\Python\Python310\lib\site-packages\pip\_vendor\urllib3\util\ssl_.py", line 495, in _ssl_wrap_socket_impl
    return ssl_context.wrap_socket(sock)
  File "C:\Users\Thishakya\AppData\Local\Programs\Python\Python310\lib\ssl.py", line 512, in wrap_socket
    return self.sslsocket_class._create(
  File "C:\Users\Thishakya\AppData\Local\Programs\Python\Python310\lib\ssl.py", line 1027, in _create
    raise ValueError("check_hostname requires server_hostname")
ValueError: check_hostname requires server_hostname

I cannot install any pip package in my pc it returns that error .I am using v2ray and proxyfire.I don't think these software make trouble with pip command because I use it without any error before formatting my PC.

I already installed Python and added into env var : Python 3.10.1

Appreciate Your support .

Answer 1

I also met the same problem, the reason is Clash Proxy or System Proxy trigger the problem.

so, you need to close Clash or switch off the system Proxy.

What if, in order to boost the downloading speed,you can install TAP Device and open the Service Mode in Clash instead of using System Proxy mode.

Answer 2

I believe it's because the Link component requires a to attribute:

So just do <NavBarLink to="/somepage" />

Let me know if that fixes the problem.