# Installation problem

**URL:** <https://community.letsencrypt.org/t/installation-problem/107267>\
**Category:** Help\
**Created:** [November 26, 2019, 5:57pm UTC](https://community.letsencrypt.org/t/installation-problem/107267 "2019-11-26T17:57:54Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![elChak](https://avatars.discourse-cdn.com/v4/letter/e/b5a626/32.png) [@elChak](https://community.letsencrypt.org/u/elChak)\
**Post date:** [November 26, 2019, 5:57pm UTC](https://community.letsencrypt.org/t/installation-problem/107267/1 "2019-11-26T17:57:54Z")

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Hi,

I’m having problems installing cerbot on:

- CentOS RHEL7
- Apache
- AWS EC2

I’m following the instructions on:

> **[Certbot - Centosrhel7 Apache](https://certbot.eff.org/lets-encrypt/centosrhel7-apache)**
>
> Automatically enable HTTPS on your website with EFF's Certbot, deploying Let's Encrypt certificates.

I have already installed 8-10 servers without problems on past months, but this one is having problems, may it be because a cerbot update?

The error:  
yum install certbot python2-certbot-apache  
…  
…  
–\> Finished Dependency Resolution  
Error: Package: python2-certbot-apache-0.39.0-1.el7.noarch (epel)  
Requires: pytest  
Error: Package: 1:python-zope-component-4.1.0-5.el7.noarch (epel)  
Requires: python-zope-interface  
Error: Package: python2-certbot-0.39.0-1.el7.noarch (epel)  
Requires: python-zope-interface  
You could try using --skip-broken to work around the problem  
You could try running: rpm -Va --nofiles --nodigest

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**Author:** ![rg305](https://sea3.discourse-cdn.com/letsencrypt/user_avatar/community.letsencrypt.org/rg305/32/91314_2.png) [@rg305](https://community.letsencrypt.org/u/rg305)\
**Post date:** [November 26, 2019, 6:02pm UTC](https://community.letsencrypt.org/t/installation-problem/107267/2 "2019-11-26T18:02:02Z")

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Similar to this topic:

> [@Unable to install certbox](https://community.letsencrypt.org/t/unable-to-install-certbox/106880):
>
> I…

[but they did not specify the exact steps taken to get it fixed]

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<div class="post-metadata">

**Author:** ![elChak](https://avatars.discourse-cdn.com/v4/letter/e/b5a626/32.png) [@elChak](https://community.letsencrypt.org/u/elChak)\
**Post date:** [November 26, 2019, 6:18pm UTC](https://community.letsencrypt.org/t/installation-problem/107267/3 "2019-11-26T18:18:42Z")

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Thanks Rudy,

I have tried the options you mencioned there. Also other ways to install sope or pytest but didnt work… Its strange that works on other servers with the same distribution.

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**Author:** ![rg305](https://sea3.discourse-cdn.com/letsencrypt/user_avatar/community.letsencrypt.org/rg305/32/91314_2.png) [@rg305](https://community.letsencrypt.org/u/rg305)\
**Post date:** [November 26, 2019, 11:39pm UTC](https://community.letsencrypt.org/t/installation-problem/107267/4 "2019-11-26T23:39:53Z")

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Unsure but maybe order matters (it shouldn’t but there is obviously something not right).  
Try checking the histories to ensure all was added correctly (and maybe in same order).

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**Author:** ![system](https://global.discourse-cdn.com/letsencrypt/original/3X/c/a/ca6c06ea1ea201324bba7048c6841ce60236468d.png) [@system](https://community.letsencrypt.org/u/system)\
**Post date:** [December 26, 2019, 11:39pm UTC](https://community.letsencrypt.org/t/installation-problem/107267/5 "2019-12-26T23:39:53Z")

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Closed on December 26, 2019, 11:39pm UTC

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