Let'sEncrypt SSL证书 创建失败，这个怎么解决

zdyan10

/bin/certbot [found]
index-url = https://pypi.doubanio.com/simple/
pip.conf exist.
Starting create SSL Certificate use Let's Encrypt...
Bootstrapping dependencies for Debian-based OSes... (you can skip this with --no-bootstrap)
Hit:1 http://cn.archive.ubuntu.com/ubuntu xenial InRelease
Hit:2 http://cn.archive.ubuntu.com/ubuntu xenial-updates InRelease
Hit:3 http://cn.archive.ubuntu.com/ubuntu xenial-backports InRelease
Get:4 http://security.ubuntu.com/ubuntu xenial-security InRelease [102 kB]
Fetched 102 kB in 3s (33.0 kB/s)                           
Reading package lists... Done
Reading package lists... Done
Building dependency tree      
Reading state information... Done
gcc is already the newest version (4:5.3.1-1ubuntu1).
libffi-dev is already the newest version (3.2.1-4).
python is already the newest version (2.7.11-1).
python-dev is already the newest version (2.7.11-1).
augeas-lenses is already the newest version (1.4.0-0ubuntu1.1).
ca-certificates is already the newest version (20170717~16.04.1).
libaugeas0 is already the newest version (1.4.0-0ubuntu1.1).
libssl-dev is already the newest version (1.0.2g-1ubuntu4.9).
openssl is already the newest version (1.0.2g-1ubuntu4.9).
python-virtualenv is already the newest version (15.0.1+ds-3ubuntu1).
virtualenv is already the newest version (15.0.1+ds-3ubuntu1).
0 upgraded, 0 newly installed, 0 to remove and 81 not upgraded.
Creating virtual environment...
Traceback (most recent call last):
  File "/usr/lib/python3/dist-packages/virtualenv.py", line 2363, in <module>
    main()
  File "/usr/lib/python3/dist-packages/virtualenv.py", line 719, in main
    symlink=options.symlink)
  File "/usr/lib/python3/dist-packages/virtualenv.py", line 988, in create_environment
    download=download,
  File "/usr/lib/python3/dist-packages/virtualenv.py", line 918, in install_wheel
    call_subprocess(cmd, show_stdout=False, extra_env=env, stdin=SCRIPT)
  File "/usr/lib/python3/dist-packages/virtualenv.py", line 812, in call_subprocess
    % (cmd_desc, proc.returncode))
OSError: Command /opt/eff.org/certbot/venv/bin/python2.7 - setuptools pkg_resources pip wheel failed with error code 2
Let's Encrypt SSL Certificate create failed!

licess

参考：https://bbs.vpser.net/thread-16253-1-1.html#pid50671