Getting AttributeError: 'module' object has no attribute 'LockError'

Note:- I already have this domain signed with certificate on other server now i am migrating to new server and trying to sign again.

My domain is:

I ran this command: sudo certbot --apache

It produced this output:
Traceback (most recent call last):
File “/usr/local/bin/certbot”, line 11, in
File “/usr/local/lib/python2.7/dist-packages/certbot/”, line 896, in main
return config.func(config, plugins)
File “/usr/local/lib/python2.7/dist-packages/certbot/”, line 594, in run
installer, authenticator = plug_sel.choose_configurator_plugins(config, plugins, “run”)
File “/usr/local/lib/python2.7/dist-packages/certbot/plugins/”, line 185, in choose_configurator_plugins
authenticator = installer = pick_configurator(config, req_inst, plugins)
File “/usr/local/lib/python2.7/dist-packages/certbot/plugins/”, line 25, in pick_configurator
(interfaces.IAuthenticator, interfaces.IInstaller))
File “/usr/local/lib/python2.7/dist-packages/certbot/plugins/”, line 77, in pick_plugin
File “/usr/local/lib/python2.7/dist-packages/certbot/plugins/”, line 228, in prepare
return [plugin_ep.prepare() for plugin_ep in six.itervalues(self._plugins)]
File “/usr/local/lib/python2.7/dist-packages/certbot/plugins/”, line 114, in prepare
File “/usr/lib/python2.7/dist-packages/certbot_apache/”, line 203, in prepare
except (OSError, errors.LockError):
AttributeError: ‘module’ object has no attribute ‘LockError’

My web server is (include version):
Server version: Apache/2.4.18 (Ubuntu)
Server built: 2017-07-27T14:34:01

The operating system my web server runs on is (include version):
Distributor ID: Ubuntu
Description: Ubuntu 16.04.3 LTS
Release: 16.04
Codename: xenial

My hosting provider, if applicable, is: digitalocean

I can login to a root shell on my machine (yes or no, or I don’t know):yes

I’m using a control panel to manage my site (no, or provide the name and version of the control panel):

how did you install certbot?


using this link

$ sudo apt-get update
$ sudo apt-get install software-properties-common
$ sudo add-apt-repository ppa:certbot/certbot
$ sudo apt-get update
$ sudo apt-get install python-certbot-apache

@SwartzCr, could you please take a look at this?

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