# Plugin for plesk not working received the following error

**URL:** <https://community.letsencrypt.org/t/plugin-for-plesk-not-working-received-the-following-error/19310>\
**Category:** Server\
**Created:** [August 26, 2016, 5:16pm UTC](https://community.letsencrypt.org/t/plugin-for-plesk-not-working-received-the-following-error/19310 "2016-08-26T17:16:35Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![dailyhypervisor](https://sea3.discourse-cdn.com/letsencrypt/user_avatar/community.letsencrypt.org/dailyhypervisor/32/8488_2.png) [@dailyhypervisor](https://community.letsencrypt.org/u/dailyhypervisor)\
**Post date:** [August 26, 2016, 5:16pm UTC](https://community.letsencrypt.org/t/plugin-for-plesk-not-working-received-the-following-error/19310/1 "2016-08-26T17:16:35Z")

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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.

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<div class="post-metadata">

**Author:** ![dailyhypervisor](https://sea3.discourse-cdn.com/letsencrypt/user_avatar/community.letsencrypt.org/dailyhypervisor/32/8488_2.png) [@dailyhypervisor](https://community.letsencrypt.org/u/dailyhypervisor)\
**Post date:** [August 26, 2016, 5:26pm UTC](https://community.letsencrypt.org/t/plugin-for-plesk-not-working-received-the-following-error/19310/2 "2016-08-26T17:26:41Z")

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I have tried the solutions listed here [Plesk 12.5 [Debian 7.9] Error by create a SSL](https://community.letsencrypt.org/t/plesk-12-5-debian-7-9-error-by-create-a-ssl/12809/7) and none work. The final solution fails when I perform the /pip install --upgrade cryptography. I get errors and it doesn’t complete. The error I se is:

error: command ‘gcc’ failed with exit status 1

* * *

Failed building wheel for cryptography  
Running [setup.py](http://setup.py) clean for cryptography  
Failed to build cryptography  
Installing collected packages: cffi, cryptography  
Found existing installation: cffi 1.5.2  
Uninstalling cffi-1.5.2:  
Successfully uninstalled cffi-1.5.2  
Found existing installation: cryptography 1.3.1  
Uninstalling cryptography-1.3.1:  
Successfully uninstalled cryptography-1.3.1  
Running [setup.py](http://setup.py) install for cryptography … error  
Complete output from command /usr/local/psa/var/modules/letsencrypt/venv.W9Q9i/bin/python -u -c “import setuptools, tokenize; **file** =’/tmp/pip-build-kqimzt/cryptography/setup.py’;exec(compile(getattr(tokenize, ‘open’, open)( **file** ).read().replace(’\r\n’, ‘\n’), **file** , ‘exec’))” install --record /tmp/pip-iN67yf-record/install-record.txt --single-version-externally-managed --compile --install-headers /usr/local/psa/var/modules/letsencrypt/venv.W9Q9i/include/site/python2.7/cryptography:

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<div class="post-metadata">

**Author:** ![dailyhypervisor](https://sea3.discourse-cdn.com/letsencrypt/user_avatar/community.letsencrypt.org/dailyhypervisor/32/8488_2.png) [@dailyhypervisor](https://community.letsencrypt.org/u/dailyhypervisor)\
**Post date:** [August 26, 2016, 6:59pm UTC](https://community.letsencrypt.org/t/plugin-for-plesk-not-working-received-the-following-error/19310/3 "2016-08-26T18:59:02Z")

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Plesk 12.5.30, CentOS 6.8, Python 2.6.6

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<div class="post-metadata">

**Author:** ![system](https://global.discourse-cdn.com/letsencrypt/original/3X/c/a/ca6c06ea1ea201324bba7048c6841ce60236468d.png) [@system](https://community.letsencrypt.org/u/system)\
**Post date:** [September 25, 2016, 6:59pm UTC](https://community.letsencrypt.org/t/plugin-for-plesk-not-working-received-the-following-error/19310/4 "2016-09-25T18:59:10Z")

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Closed on September 25, 2016, 6:59pm UTC

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