How to fix LetsEncrypt Upgrade Error in Amazon Linux 2

[et_pb_section admin_label=”section”] [et_pb_row admin_label=”row”] [et_pb_column type=”4_4″][et_pb_text admin_label=”Text”]

After Installing Certbot on Amazon Linux 2, and then momentarily Upgrading Certbot returns the following error below:

Error: couldn't get currently installed version for /opt/eff.org/certbot/venv/bin/letsencrypt:
Traceback (most recent call last):
  File "/opt/eff.org/certbot/venv/bin/letsencrypt", line 7, in <module>
    from certbot.main import main
  File "/opt/eff.org/certbot/venv/local/lib/python2.7/dist-packages/certbot/main.py", line 10, in <module>
    import josepy as jose
  File "/opt/eff.org/certbot/venv/local/lib/python2.7/dist-packages/josepy/__init__.py", line 44, in <module>
    from josepy.interfaces import JSONDeSerializable
  File "/opt/eff.org/certbot/venv/local/lib/python2.7/dist-packages/josepy/interfaces.py", line 8, in <module>
    from josepy import errors, util
  File "/opt/eff.org/certbot/venv/local/lib/python2.7/dist-packages/josepy/util.py", line 4, in <module>
    import OpenSSL
  File "/opt/eff.org/certbot/venv/local/lib/python2.7/dist-packages/OpenSSL/__init__.py", line 8, in <module>
    from OpenSSL import rand, crypto, SSL
  File "/opt/eff.org/certbot/venv/local/lib/python2.7/dist-packages/OpenSSL/rand.py", line 12, in <module>
    from OpenSSL._util import (
  File "/opt/eff.org/certbot/venv/local/lib/python2.7/dist-packages/OpenSSL/_util.py", line 6, in <module>
    from cryptography.hazmat.bindings.openssl.binding import Binding
ImportError: No module named cryptography.hazmat.bindings.openssl.binding

To fix the problem, run the commands below:

$ ln -s /opt/eff.org/certbot/venv/local/lib64/python2.7/dist-packages/cryptography /opt/eff.org/certbot/venv/local/lib/python2.7/dist-packages/cryptography
$ ln -s /opt/eff.org/certbot/venv/local/lib64/python2.7/dist-packages/cryptography-2.0.2.dist-info /opt/eff.org/certbot/venv/local/lib/python2.7/dist-packages/cryptography-2.0.2.dist-info
$ ln -s /opt/eff.org/certbot/venv/local/lib64/python2.7/dist-packages/cffi /opt/eff.org/certbot/venv/local/lib/python2.7/dist-packages/cffi
$ ln -s /opt/eff.org/certbot/venv/local/lib64/python2.7/dist-packages/cffi-1.10.0.dist-info /opt/eff.org/certbot/venv/local/lib/python2.7/dist-packages/cffi-1.10.0.dist-info
$ ln -s /opt/eff.org/certbot/venv/local/lib64/python2.7/dist-packages/_cffi_backend.so /opt/eff.org/certbot/venv/local/lib/python2.7/dist-packages/_cffi_backend.so
$ ln -s /opt/eff.org/certbot/venv/local/lib64/python2.7/dist-packages/.libs_cffi_backend /opt/eff.org/certbot/venv/local/lib/python2.7/dist-packages/.libs_cffi_backend
$ ln -s /opt/eff.org/certbot/venv/local/lib64/python2.7/dist-packages/zope.interface-4.1.3-py2.7-nspkg.pth /opt/eff.org/certbot/venv/local/lib/python2.7/dist-packages/zope.interface-4.1.3-py2.7-nspkg.pth
$ ln -s /opt/eff.org/certbot/venv/local/lib64/python2.7/dist-packages/zope.interface-4.1.3-py2.7.egg-info /opt/eff.org/certbot/venv/local/lib/python2.7/dist-packages/zope.interface-4.1.3-py2.7.egg-info
$ ln -s /opt/eff.org/certbot/venv/local/lib64/python2.7/dist-packages/zope/interface /opt/eff.org/certbot/venv/local/lib/python2.7/dist-packages/zope/interface

Once done, then run the following:

$ /opt/eff.org/certbot/venv/local/bin/pip install cryptography interface

Thanks to xinxilas

[/et_pb_text][/et_pb_column] [/et_pb_row] [/et_pb_section]