error while installing requirements.txt

[kalmastenitin]

the following error occurred while installing requirements I am using fresh installation of python3.7

following error lines:
ERROR: Complete output from command python setup.py egg_info:
ERROR: Traceback (most recent call last):
File "c:\python3.7\lib\urllib\request.py", line 1317, in do_open
encode_chunked=req.has_header('Transfer-encoding'))
File "c:\python3.7\lib\http\client.py", line 1229, in request
self._send_request(method, url, body, headers, encode_chunked)
File "c:\python3.7\lib\http\client.py", line 1275, in _send_request
self.endheaders(body, encode_chunked=encode_chunked)
File "c:\python3.7\lib\http\client.py", line 1224, in endheaders
self._send_output(message_body, encode_chunked=encode_chunked)
File "c:\python3.7\lib\http\client.py", line 1016, in _send_output
self.send(msg)
File "c:\python3.7\lib\http\client.py", line 956, in send
self.connect()
File "c:\python3.7\lib\site-packages\setuptools\ssl_support.py", line 174, in connect
(self.host, self.port), getattr(self, 'source_address', None)
File "c:\python3.7\lib\socket.py", line 727, in create_connection
raise err
File "c:\python3.7\lib\socket.py", line 716, in create_connection
sock.connect(sa)
TimeoutError: [WinError 10060] A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "c:\python3.7\lib\site-packages\setuptools\package_index.py", line 766, in open_url
    return open_with_auth(url, self.opener)
  File "c:\python3.7\lib\site-packages\setuptools\package_index.py", line 961, in _socket_timeout
    return func(*args, **kwargs)
  File "c:\python3.7\lib\site-packages\setuptools\package_index.py", line 1079, in open_with_auth
    fp = opener(request)
  File "c:\python3.7\lib\urllib\request.py", line 525, in open
    response = self._open(req, data)
  File "c:\python3.7\lib\urllib\request.py", line 543, in _open
    '_open', req)
  File "c:\python3.7\lib\urllib\request.py", line 503, in _call_chain
    result = func(*args)
  File "c:\python3.7\lib\site-packages\setuptools\ssl_support.py", line 161, in https_open
    lambda host, **kw: VerifyingHTTPSConn(host, self.ca_bundle, **kw), req
  File "c:\python3.7\lib\urllib\request.py", line 1319, in do_open
    raise URLError(err)
urllib.error.URLError: <urlopen error [WinError 10060] A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond>

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "<string>", line 1, in <module>
  File "C:\Users\MULTIP~1\AppData\Local\Temp\pip-install-zi6t386r\sqlalchemy-migrate\setup.py", line 29, in <module>
    pbr=True)
  File "c:\python3.7\lib\site-packages\setuptools\__init__.py", line 142, in setup
    _install_setup_requires(attrs)
  File "c:\python3.7\lib\site-packages\setuptools\__init__.py", line 137, in _install_setup_requires
    dist.fetch_build_eggs(dist.setup_requires)
  File "c:\python3.7\lib\site-packages\setuptools\dist.py", line 586, in fetch_build_eggs
    replace_conflicting=True,
  File "c:\python3.7\lib\site-packages\pkg_resources\__init__.py", line 780, in resolve
    replace_conflicting=replace_conflicting
  File "c:\python3.7\lib\site-packages\pkg_resources\__init__.py", line 1063, in best_match
    return self.obtain(req, installer)
  File "c:\python3.7\lib\site-packages\pkg_resources\__init__.py", line 1075, in obtain
    return installer(requirement)
  File "c:\python3.7\lib\site-packages\setuptools\dist.py", line 653, in fetch_build_egg
    return cmd.easy_install(req)
  File "c:\python3.7\lib\site-packages\setuptools\command\easy_install.py", line 667, in easy_install
    not self.always_copy, self.local_index
  File "c:\python3.7\lib\site-packages\setuptools\package_index.py", line 655, in fetch_distribution
    dist = find(requirement)
  File "c:\python3.7\lib\site-packages\setuptools\package_index.py", line 635, in find
    loc = self.download(dist.location, tmpdir)
  File "c:\python3.7\lib\site-packages\setuptools\package_index.py", line 579, in download
    found = self._download_url(scheme.group(1), spec, tmpdir)
  File "c:\python3.7\lib\site-packages\setuptools\package_index.py", line 824, in _download_url
    return self._attempt_download(url, filename)
  File "c:\python3.7\lib\site-packages\setuptools\package_index.py", line 830, in _attempt_download
    headers = self._download_to(url, filename)
  File "c:\python3.7\lib\site-packages\setuptools\package_index.py", line 729, in _download_to
    fp = self.open_url(url)
  File "c:\python3.7\lib\site-packages\setuptools\package_index.py", line 780, in open_url
    % (url, v.reason))
distutils.errors.DistutilsError: Download error for https://files.pythonhosted.org/packages/07/3e/22d1d35a4b51706ca3590c54359aeb5fa7ea60df46180143a3ea13d45f29/pbr-5.2.0-py2.py3-none-any.whl#sha256=6901995b9b686cb90cceba67a0f6d4d14ae003cd59bc12beb61549bdfbe3bc89: [WinError 10060] A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond
----------------------------------------

ERROR: Command "python setup.py egg_info" failed with error code 1 in C:\Users\MULTIP~1\AppData\Local\Temp\pip-install-zi6t386r\sqlalchemy-migrate\