500 : Internal Server Error

[marcovangoethem]

I installed cite2c on windows 10 but get a 500 error on the site http://localhost:8888/cite2c/zotero_oauth while pressing the cite button. I have restart.

After the startup of my notebook I get:
[W 13:44:33.614 NotebookApp] Could not find Zotero citation styles directory.

After pressing the Cite button I get the following messages/calllstack:

[I 13:44:33.976 NotebookApp] Accepting one-time-token-authenticated connection from ::1
[I 13:45:33.182 NotebookApp] Kernel started: f7f86268-89ed-410f-8ec2-6dc4334f3b27
[W 13:45:33.413 NotebookApp] 404 GET /nbextensions/widgets/notebook/js/extension.js?v=20200306134433 (::1) 15.04ms referer=http://localhost:8888/notebooks/Emmissivity.ipynb
[I 13:45:34.486 NotebookApp] Adapting to protocol v5.1 for kernel f7f86268-89ed-410f-8ec2-6dc4334f3b27
[E 13:45:36.480 NotebookApp] Uncaught exception GET /cite2c/zotero_oauth (::1)
HTTPServerRequest(protocol='http', host='localhost:8888', method='GET', uri='/cite2c/zotero_oauth', version='HTTP/1.1', remote_ip='::1', headers={'Host': 'localhost:8888', 'Connection': 'keep-alive', 'Upgrade-Insecure-Requests': '1', 'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/80.0.3987.132 Safari/537.36', 'Sec-Fetch-Dest': 'document', 'Accept': 'text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,/;q=0.8,application/signed-exchange;v=b3;q=0.9', 'Sec-Fetch-Site': 'same-origin', 'Sec-Fetch-Mode': 'navigate', 'Sec-Fetch-User': '?1', 'Referer': 'http://localhost:8888/notebooks/Emmissivity.ipynb', 'Accept-Encoding': 'gzip, deflate, br', 'Accept-Language': 'en-US,en;q=0.9', 'Cookie': '_xsrf=2|86ded06b|5f1b66826a8f048a894e912f397c4c4c|1582727828; username-localhost-8889="2|1:0|10:1583410043|23:username-localhost-8889|44:YzE1NjM0ODFlMWY5NGFmMTk0MmM4OGFmOWM3MjZiZTM=|02c2b870066f4fd514e02cec1ad6894fba547a9b038edd2e302f50fd5ac6477c"; username-localhost-8888="2|1:0|10:1583498673|23:username-localhost-8888|44:MGNjMzcwMDk0YjE3NGJiYWIxZjkxY2VmYTkwMjFiZTU=|c85014303590dcf3672fff77560919081cdb2b2207eecead265fdb4a40f9b97f"'})
Traceback (most recent call last):
File "c:\IntelPython3\lib\site-packages\urllib3\contrib\pyopenssl.py", line 441, in wrap_socket
cnx.do_handshake()
File "c:\IntelPython3\lib\site-packages\OpenSSL\SSL.py", line 1806, in do_handshake
self._raise_ssl_error(self._ssl, result)
File "c:\IntelPython3\lib\site-packages\OpenSSL\SSL.py", line 1546, in _raise_ssl_error
_raise_current_error()
File "c:\IntelPython3\lib\site-packages\OpenSSL_util.py", line 54, in exception_from_error_queue
raise exception_type(errors)
OpenSSL.SSL.Error: [('SSL routines', 'ssl3_get_server_certificate', 'certificate verify failed')]

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "c:\IntelPython3\lib\site-packages\urllib3\connectionpool.py", line 601, in urlopen
    chunked=chunked)
  File "c:\IntelPython3\lib\site-packages\urllib3\connectionpool.py", line 346, in _make_request
    self._validate_conn(conn)
  File "c:\IntelPython3\lib\site-packages\urllib3\connectionpool.py", line 850, in _validate_conn
    conn.connect()
  File "c:\IntelPython3\lib\site-packages\urllib3\connection.py", line 326, in connect
    ssl_context=context)
  File "c:\IntelPython3\lib\site-packages\urllib3\util\ssl_.py", line 329, in ssl_wrap_socket
    return context.wrap_socket(sock, server_hostname=server_hostname)
  File "c:\IntelPython3\lib\site-packages\urllib3\contrib\pyopenssl.py", line 448, in wrap_socket
    raise ssl.SSLError('bad handshake: %r' % e)
ssl.SSLError: ("bad handshake: Error([('SSL routines', 'ssl3_get_server_certificate', 'certificate verify failed')],)",)

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "c:\IntelPython3\lib\site-packages\requests\adapters.py", line 440, in send
    timeout=timeout
  File "c:\IntelPython3\lib\site-packages\urllib3\connectionpool.py", line 639, in urlopen
    _stacktrace=sys.exc_info()[2])
  File "c:\IntelPython3\lib\site-packages\urllib3\util\retry.py", line 388, in increment
    raise MaxRetryError(_pool, url, error or ResponseError(cause))
urllib3.exceptions.MaxRetryError: HTTPSConnectionPool(host='www.zotero.org', port=443): Max retries exceeded with url: /oauth/request?oauth_consumer_key=8cc04771a4e2ef9c9c4d&oauth_nonce=72b39765172c341dcd321f481cc5a0eff75384ff&oauth_signature_method=HMAC-SHA1&oauth_timestamp=1583498736&oauth_version=1.0&oauth_callback=http%3A%2F%2Flocalhost%3A8888%2Fcite2c%2Fzotero_oauth_cb&oauth_signature=iB8TDW6HGpkQB5UHgBgJnwWC%2FXc%3D (Caused by SSLError(SSLError("bad handshake: Error([('SSL routines', 'ssl3_get_server_certificate', 'certificate verify failed')],)",),))

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "c:\IntelPython3\lib\site-packages\tornado\web.py", line 1509, in _execute
    result = method(*self.path_args, **self.path_kwargs)
  File "c:\IntelPython3\lib\site-packages\cite2c\zotero_oauth.py", line 42, in get
    params={'oauth_callback': callback}
  File "c:\IntelPython3\lib\site-packages\rauth\service.py", line 242, in get_request_token
    r = self.get_raw_request_token(method=method, **kwargs)
  File "c:\IntelPython3\lib\site-packages\rauth\service.py", line 215, in get_raw_request_token
    **kwargs)
  File "c:\IntelPython3\lib\site-packages\rauth\session.py", line 210, in request
    return super(OAuth1Session, self).request(method, url, **req_kwargs)
  File "c:\IntelPython3\lib\site-packages\requests\sessions.py", line 508, in request
    resp = self.send(prep, **send_kwargs)
  File "c:\IntelPython3\lib\site-packages\requests\sessions.py", line 618, in send
    r = adapter.send(request, **kwargs)
  File "c:\IntelPython3\lib\site-packages\requests\adapters.py", line 506, in send
    raise SSLError(e, request=request)
requests.exceptions.SSLError: HTTPSConnectionPool(host='www.zotero.org', port=443): Max retries exceeded with url: /oauth/request?oauth_consumer_key=8cc04771a4e2ef9c9c4d&oauth_nonce=72b39765172c341dcd321f481cc5a0eff75384ff&oauth_signature_method=HMAC-SHA1&oauth_timestamp=1583498736&oauth_version=1.0&oauth_callback=http%3A%2F%2Flocalhost%3A8888%2Fcite2c%2Fzotero_oauth_cb&oauth_signature=iB8TDW6HGpkQB5UHgBgJnwWC%2FXc%3D (Caused by SSLError(SSLError("bad handshake: Error([('SSL routines', 'ssl3_get_server_certificate', 'certificate verify failed')],)",),))

[E 13:45:36.505 NotebookApp] {
"Host": "localhost:8888",
"Connection": "keep-alive",
"Upgrade-Insecure-Requests": "1",
"User-Agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/80.0.3987.132 Safari/537.36",
"Sec-Fetch-Dest": "document",
"Accept": "text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,/;q=0.8,application/signed-exchange;v=b3;q=0.9",
"Sec-Fetch-Site": "same-origin",
"Sec-Fetch-Mode": "navigate",
"Sec-Fetch-User": "?1",
"Referer": "http://localhost:8888/notebooks/Emmissivity.ipynb",
"Accept-Encoding": "gzip, deflate, br",
"Accept-Language": "en-US,en;q=0.9",
"Cookie": "_xsrf=2|86ded06b|5f1b66826a8f048a894e912f397c4c4c|1582727828; username-localhost-8889="2|1:0|10:1583410043|23:username-localhost-8889|44:YzE1NjM0ODFlMWY5NGFmMTk0MmM4OGFmOWM3MjZiZTM=|02c2b870066f4fd514e02cec1ad6894fba547a9b038edd2e302f50fd5ac6477c"; username-localhost-8888="2|1:0|10:1583498673|23:username-localhost-8888|44:MGNjMzcwMDk0YjE3NGJiYWIxZjkxY2VmYTkwMjFiZTU=|c85014303590dcf3672fff77560919081cdb2b2207eecead265fdb4a40f9b97f""
}
[E 13:45:36.506 NotebookApp] 500 GET /cite2c/zotero_oauth (::1) 474.68ms referer=http://localhost:8888/notebooks/Emmissivity.ipynb