I have installed the letsencrypt plugun for plesk control pane and am received the following error:
Traceback (most recent call last):
File “/usr/local/psa/var/modules/letsencrypt/venv/bin/certbot”, line 11, in
sys.exit(main())
File “/usr/local/psa/var/modules/letsencrypt/venv.W9Q9i/lib/python2.7/site-packages/certbot/main.py”, line 700, in main
plugins = plugins_disco.PluginsRegistry.find_all()
File “/usr/local/psa/var/modules/letsencrypt/venv.W9Q9i/lib/python2.7/site-packages/certbot/plugins/disco.py”, line 174, in find_all
plugin_ep = PluginEntryPoint(entry_point)
File “/usr/local/psa/var/modules/letsencrypt/venv.W9Q9i/lib/python2.7/site-packages/certbot/plugins/disco.py”, line 33, in init
self.plugin_cls = entry_point.load()
File “/usr/local/psa/var/modules/letsencrypt/venv.W9Q9i/lib/python2.7/site-packages/pkg_resources/init.py”, line 2280, in load
self.require(*args, **kwargs)
File “/usr/local/psa/var/modules/letsencrypt/venv.W9Q9i/lib/python2.7/site-packages/pkg_resources/init.py”, line 2297, in require
items = working_set.resolve(reqs, env, installer)
File “/usr/local/psa/var/modules/letsencrypt/venv.W9Q9i/lib/python2.7/site-packages/pkg_resources/init.py”, line 858, in resolve
raise VersionConflict(dist, req).with_context(dependent_req)
ContextualVersionConflict: (cryptography 1.3.1 (/usr/local/psa/var/modules/letsencrypt/venv.W9Q9i/lib/python2.7/site-packages), Requirement.parse(‘cryptography>=1.3.4’), set([‘PyOpenSSL’]))
I have tried avery remedy I could find online with no success. Please help.