Certbot: ImportError: 정의되지 않은 기호: EC_GROUP_new_curve_GF2m

./letsencrypt-auto --help를 실행하려고 하면 계속 이 문제가 발생합니다. 이전에는 다른 몇 가지 문제가 있었지만 지금은 이 문제가 있습니다. (이전 것들은 CentOS 7.2 및 ffi 헤더 파일의 위치와 관련이 있었습니다. 이러한 오류에 대해 ln -s /usr/include/에서 /usr/include/python2.7/로의 심볼릭 링크를 생성해야 했습니다)

이것은 모두 잘 작동했지만 갱신을 수행하는 동안 어딘가에 업데이트되어 더 이상 작동하지 않는 것 같습니다. 도움을 주시면 감사하겠습니다.

CentOS Linux 릴리스 7.2.1511(코어)

Checking for new version... Creating virtual environment... Installing Python packages... Installation succeeded. Requesting root privileges to run letsencrypt... /root/.local/share/letsencrypt/bin/letsencrypt --help Traceback (most recent call last): File "/root/.local/share/letsencrypt/bin/letsencrypt", line 9, in <module> load_entry_point('letsencrypt==0.4.2', 'console_scripts', 'letsencrypt')() File "/root/.local/share/letsencrypt/lib/python2.7/site-packages/pkg_resources/__init__.py", line 549, in load_entry_point return get_distribution(dist).load_entry_point(group, name) File "/root/.local/share/letsencrypt/lib/python2.7/site-packages/pkg_resources/__init__.py", line 2542, in load_entry_point return ep.load() File "/root/.local/share/letsencrypt/lib/python2.7/site-packages/pkg_resources/__init__.py", line 2202, in load return self.resolve() File "/root/.local/share/letsencrypt/lib/python2.7/site-packages/pkg_resources/__init__.py", line 2208, in resolve module = __import__(self.module_name, fromlist=['__name__'], level=0) File "/root/.local/share/letsencrypt/lib/python2.7/site-packages/letsencrypt/cli.py", line 21, in <module> import OpenSSL File "/root/.local/share/letsencrypt/lib/python2.7/site-packages/OpenSSL/__init__.py", line 8, in <module> from OpenSSL import rand, crypto, SSL File "/root/.local/share/letsencrypt/lib/python2.7/site-packages/OpenSSL/rand.py", line 11, in <module> from OpenSSL._util import ( File "/root/.local/share/letsencrypt/lib/python2.7/site-packages/OpenSSL/_util.py", line 6, in <module> from cryptography.hazmat.bindings.openssl.binding import Binding File "/root/.local/share/letsencrypt/lib/python2.7/site-packages/cryptography/hazmat/bindings/openssl/binding.py", line 14, in <module> from cryptography.hazmat.bindings._openssl import ffi, lib ImportError: /root/.local/share/letsencrypt/lib/python2.7/site-packages/cryptography/hazmat/bindings/_openssl.so: undefined symbol: EC_GROUP_new_curve_GF2m