# Letsencrypt certificate upgrade problem

**URL:** <https://community.letsencrypt.org/t/letsencrypt-certificate-upgrade-problem/29714>\
**Category:** Help\
**Created:** [March 13, 2017, 10:40am UTC](https://community.letsencrypt.org/t/letsencrypt-certificate-upgrade-problem/29714 "2017-03-13T10:40:13Z")\
**Posts on this page:** 6\
**Page:** 1

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**Author:** ![Dave123](https://avatars.discourse-cdn.com/v4/letter/d/7bcc69/32.png) [@Dave123](https://community.letsencrypt.org/u/Dave123)\
**Post date:** [March 13, 2017, 10:40am UTC](https://community.letsencrypt.org/t/letsencrypt-certificate-upgrade-problem/29714/1 "2017-03-13T10:40:13Z")

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Please fill out the fields below so we can help you better.

My domain is:

I ran this command:./letsencrypt-auto renew --dry-run

It produced this output:Error: couldn’t get currently installed version for /root/.local/share/letsencrypt/bin/letsencrypt:  
Traceback (most recent call last):  
File “/root/.local/share/letsencrypt/bin/letsencrypt”, line 7, in   
from certbot.main import main  
File “/root/.local/share/letsencrypt/local/lib/python2.7/site-packages/certbot/main.py”, line 13, in   
from acme import jose  
File “/root/.local/share/letsencrypt/local/lib/python2.7/site-packages/acme/jose/ **init**.py”, line 37, in   
from acme.jose.interfaces import JSONDeSerializable  
File “/root/.local/share/letsencrypt/local/lib/python2.7/site-packages/acme/jose/interfaces.py”, line 9, in   
from acme.jose import util  
File “/root/.local/share/letsencrypt/local/lib/python2.7/site-packages/acme/jose/util.py”, line 4, in   
from cryptography.hazmat.primitives.asymmetric import rsa  
File “/root/.local/share/letsencrypt/local/lib/python2.7/site-packages/cryptography/hazmat/primitives/asymmetric/rsa.py”, line 14, in   
from cryptography.hazmat.backends.interfaces import RSABackend  
File “/root/.local/share/letsencrypt/local/lib/python2.7/site-packages/cryptography/hazmat/backends/ **init**.py”, line 7, in   
import pkg\_resources  
File “/root/.local/share/letsencrypt/local/lib/python2.7/site-packages/pkg\_resources/ **init**.py”, line 36, in   
import plistlib  
File “/usr/lib/python2.7/plistlib.py”, line 62, in   
import datetime  
ImportError: No module named datetime

My operating system is (include version): Ubuntu 16.04.2 LTS

My web server is (include version):nginx 1.10

My hosting provider, if applicable, is:

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

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

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**Author:** ![ahaw021](https://sea3.discourse-cdn.com/letsencrypt/user_avatar/community.letsencrypt.org/ahaw021/32/14882_2.png) [@ahaw021](https://community.letsencrypt.org/u/ahaw021)\
**Post date:** [March 13, 2017, 11:37am UTC](https://community.letsencrypt.org/t/letsencrypt-certificate-upgrade-problem/29714/2 "2017-03-13T11:37:44Z")

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hi @Dave123

it looks like certbot it not installed

did you unistall?

Andrei

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<div class="post-metadata">

**Author:** ![Dave123](https://avatars.discourse-cdn.com/v4/letter/d/7bcc69/32.png) [@Dave123](https://community.letsencrypt.org/u/Dave123)\
**Post date:** [March 13, 2017, 1:52pm UTC](https://community.letsencrypt.org/t/letsencrypt-certificate-upgrade-problem/29714/3 "2017-03-13T13:52:54Z")

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How to install certbot ?

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**Author:** ![Osiris](https://avatars.discourse-cdn.com/v4/letter/o/839c29/32.png) [@Osiris](https://community.letsencrypt.org/u/Osiris)\
**Post date:** [March 13, 2017, 1:58pm UTC](https://community.letsencrypt.org/t/letsencrypt-certificate-upgrade-problem/29714/4 "2017-03-13T13:58:38Z")

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Well, that would the `~auto` script actually do _for_ you… And it _should_ take care of all dependencies…

But for some reason your [datetime Python module](https://docs.python.org/2/library/datetime.html) could not be found. That’s actually pretty weird, because it’s a built-in module.

There are a few sites which relate to this problem, such as [http://askubuntu.com/questions/509283/python-no-module-named-datetime](http://askubuntu.com/questions/509283/python-no-module-named-datetime)

[Try Google for `datetime python ubuntu`](https://www.google.nl/search?q=datetime+python&oq=datetime+python#q=datetime+python+ubuntu&*).

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<div class="post-metadata">

**Author:** ![Dave123](https://avatars.discourse-cdn.com/v4/letter/d/7bcc69/32.png) [@Dave123](https://community.letsencrypt.org/u/Dave123)\
**Post date:** [March 13, 2017, 2:44pm UTC](https://community.letsencrypt.org/t/letsencrypt-certificate-upgrade-problem/29714/6 "2017-03-13T14:44:27Z")

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I am using this command for renewing the certificate  
./letsencrypt-auto renew --dry-run. Can you please help me to understand where to put auto ?

I downloaded using ln -s /usr/lib/python2.7/lib-dynload/datetime.x86\_64-linux-gnu.so /usr/lib/python2.7/lib-dynload/datetime.so but its throwing error.

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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:** [April 12, 2017, 2:44pm UTC](https://community.letsencrypt.org/t/letsencrypt-certificate-upgrade-problem/29714/7 "2017-04-12T14:44:30Z")

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