[SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: unable to get local issuer certificate

OpenAPI 사용하다가 SSL 에러가 발생했다. 구글링을 해서 찾은 방법들을 몇가지 적용해봐도 해결되지는 않았다. 내용들 중에 결론은 request 를 사용시 verify 를 False 로 해야 한다는 것이었다. 그래서 에러 로그를 다시 봤다. 

Traceback (most recent call last):
  File "c:\workspace\.venv\Lib\site-packages\httpx\_transports\default.py", line 69, in map_httpcore_exceptions
    yield
  File "c:\workspace\.venv\Lib\site-packages\httpx\_transports\default.py", line 233, in handle_request
    resp = self._pool.handle_request(req)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "c:\workspace\.venv\Lib\site-packages\httpcore\_sync\connection_pool.py", line 216, in handle_request
    raise exc from None
  File "c:\workspace\.venv\Lib\site-packages\httpcore\_sync\connection_pool.py", line 196, in handle_request
    response = connection.handle_request(
               ^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "c:\workspace\.venv\Lib\site-packages\httpcore\_sync\http_proxy.py", line 317, in handle_request
    stream = stream.start_tls(**kwargs)
             ^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "c:\workspace\.venv\Lib\site-packages\httpcore\_sync\http11.py", line 383, in start_tls
    return self._stream.start_tls(ssl_context, server_hostname, timeout)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "c:\workspace\.venv\Lib\site-packages\httpcore\_backends\sync.py", line 152, in start_tls
    with map_exceptions(exc_map):
  File "C:\Users\sanghyun0910.kim\AppData\Local\Programs\Python\Python311\Lib\contextlib.py", line 158, in __exit__
    self.gen.throw(typ, value, traceback)
  File "c:\workspace\.venv\Lib\site-packages\httpcore\_exceptions.py", line 14, in map_exceptions
    raise to_exc(exc) from exc
httpcore.ConnectError: [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: unable to get local issuer certificate (_ssl.c:1006)

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "c:\workspace\.venv\Lib\site-packages\openai\_base_client.py", line 972, in _request
    response = self._client.send(
               ^^^^^^^^^^^^^^^^^^
  File "c:\workspace\.venv\Lib\site-packages\httpx\_client.py", line 914, in send
    response = self._send_handling_auth(
               ^^^^^^^^^^^^^^^^^^^^^^^^^
  File "c:\workspace\.venv\Lib\site-packages\httpx\_client.py", line 942, in _send_handling_auth
    response = self._send_handling_redirects(
               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "c:\workspace\.venv\Lib\site-packages\httpx\_client.py", line 979, in _send_handling_redirects
    response = self._send_single_request(request)
               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "c:\workspace\.venv\Lib\site-packages\httpx\_client.py", line 1015, in _send_single_request
    response = transport.handle_request(request)
               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "c:\workspace\.venv\Lib\site-packages\httpx\_transports\default.py", line 232, in handle_request
    with map_httpcore_exceptions():
  File "C:\Users\sanghyun0910.kim\AppData\Local\Programs\Python\Python311\Lib\contextlib.py", line 158, in __exit__
    self.gen.throw(typ, value, traceback)
  File "c:\workspace\.venv\Lib\site-packages\httpx\_transports\default.py", line 86, in map_httpcore_exceptions
    raise mapped_exc(message) from exc
httpx.ConnectError: [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: unable to get local issuer certificate (_ssl.c:1006)

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "c:\workspace\my-ai\chat_completion.py", line 10, in <module>
    completion = client.chat.completions.create(
                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "c:\workspace\.venv\Lib\site-packages\openai\_utils\_utils.py", line 274, in wrapper
    return func(*args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^
  File "c:\workspace\.venv\Lib\site-packages\openai\resources\chat\completions.py", line 650, in create
    return self._post(
           ^^^^^^^^^^^
  File "c:\workspace\.venv\Lib\site-packages\openai\_base_client.py", line 1259, in post
    return cast(ResponseT, self.request(cast_to, opts, stream=stream, stream_cls=stream_cls))
                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "c:\workspace\.venv\Lib\site-packages\openai\_base_client.py", line 936, in request
    return self._request(
           ^^^^^^^^^^^^^^
  File "c:\workspace\.venv\Lib\site-packages\openai\_base_client.py", line 996, in _request
    return self._retry_request(
           ^^^^^^^^^^^^^^^^^^^^
  File "c:\workspace\.venv\Lib\site-packages\openai\_base_client.py", line 1074, in _retry_request
    return self._request(
           ^^^^^^^^^^^^^^
  File "c:\workspace\.venv\Lib\site-packages\openai\_base_client.py", line 996, in _request
    return self._retry_request(
           ^^^^^^^^^^^^^^^^^^^^
  File "c:\workspace\.venv\Lib\site-packages\openai\_base_client.py", line 1074, in _retry_request
    return self._request(
           ^^^^^^^^^^^^^^
  File "c:\workspace\.venv\Lib\site-packages\openai\_base_client.py", line 1006, in _request
    raise APIConnectionError(request=request) from err
openai.APIConnectionError: Connection error.

위 내용중에 이런 내용이 있다. 

  File "c:\workspace\.venv\Lib\site-packages\httpx\_client.py", line 979, in _send_handling_redirects
    response = self._send_single_request(request)

그래서 일단 위 경로의 _client.py 파일을 찾았다. 그리고 확인해보니 init 항목에 verify 가 default 로 True 로 되어있었다. 그래서 그부분을 False 로 고치고 실행을 시키니 정상 동작을 했다. 

    def __init__(
        self,
        *,
        auth: AuthTypes | None = None,
        params: QueryParamTypes | None = None,
        headers: HeaderTypes | None = None,
        cookies: CookieTypes | None = None,
        verify: VerifyTypes = False,