# Ethereum Cert-issuer installation error

**URL:** <https://community.blockcerts.org/t/ethereum-cert-issuer-installation-error/1567>\
**Category:** Support\
**Created:** [December 11, 2018, 11:26am UTC](https://community.blockcerts.org/t/ethereum-cert-issuer-installation-error/1567 "2018-12-11T11:26:56Z")\
**Posts on this page:** 8\
**Page:** 1

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**Author:** ![yoman](https://avatars.discourse-cdn.com/v4/letter/y/7bcc69/32.png) [@yoman](https://community.blockcerts.org/u/yoman)\
**Post date:** [December 11, 2018, 11:26am UTC](https://community.blockcerts.org/t/ethereum-cert-issuer-installation-error/1567/1 "2018-12-11T11:26:56Z")

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Hello,

I’m trying to install cert-issuer on a fresh installation of Ubuntu 18.04.1  
So i run the command “python3 setup.py experimental --blockchain=ethereum” and the installation stopped with an error same as the below picture but with coincurve instead of requests[security].

Then i immediately run the same command again and get a different error this time (see below picture)

 ![](https://sea2.discourse-cdn.com/flex016/uploads/blockcerts/original/1X/a88b58b3a8e7c9a8c1de147a287d0252f78b37d1.png)

Re-running the command i am stuck at the same error. I tried running “python3 -m pip install requests[security]\>=2.18.4” but i get a “segmentation fault (core dumped)” error. What could be the case?

Any help is much appreciated.

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**Author:** ![aronning](https://avatars.discourse-cdn.com/v4/letter/a/47e85d/32.png) [@aronning](https://community.blockcerts.org/u/aronning)\
**Post date:** [December 12, 2018, 3:53pm UTC](https://community.blockcerts.org/t/ethereum-cert-issuer-installation-error/1567/2 "2018-12-12T15:53:28Z")

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Are you running this in virtualenv?

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**Author:** ![yoman](https://avatars.discourse-cdn.com/v4/letter/y/7bcc69/32.png) [@yoman](https://community.blockcerts.org/u/yoman)\
**Post date:** [February 5, 2019, 10:19am UTC](https://community.blockcerts.org/t/ethereum-cert-issuer-installation-error/1567/3 "2019-02-05T10:19:17Z")

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No, i’m not. But i don’t know how to either

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**Author:** ![aronning](https://avatars.discourse-cdn.com/v4/letter/a/47e85d/32.png) [@aronning](https://community.blockcerts.org/u/aronning)\
**Post date:** [February 5, 2019, 4:01pm UTC](https://community.blockcerts.org/t/ethereum-cert-issuer-installation-error/1567/4 "2019-02-05T16:01:41Z")

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Check out [https://github.com/blockchain-certificates/cert-issuer/blob/master/docs/virtualenv.md](https://github.com/blockchain-certificates/cert-issuer/blob/master/docs/virtualenv.md)

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**Author:** ![yoman](https://avatars.discourse-cdn.com/v4/letter/y/7bcc69/32.png) [@yoman](https://community.blockcerts.org/u/yoman)\
**Post date:** [February 5, 2019, 5:39pm UTC](https://community.blockcerts.org/t/ethereum-cert-issuer-installation-error/1567/5 "2019-02-05T17:39:00Z")

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Thank you. I used virtualenv and it installed just fine. But when i run `cert-issuer -c conf.ini` i get the same error as this post: [ERROR of "cert-issuer -c /etc/cert-issuer/conf.ini"](https://community.blockcerts.org/t/error-of-cert-issuer-c-etc-cert-issuer-conf-ini/1643)

EDIT : I get the error right after the message for obtaining the transaction ID. Also i can see my transaction on etherscan

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<div class="post-metadata">

**Author:** ![yoman](https://avatars.discourse-cdn.com/v4/letter/y/7bcc69/32.png) [@yoman](https://community.blockcerts.org/u/yoman)\
**Post date:** [February 7, 2019, 10:41am UTC](https://community.blockcerts.org/t/ethereum-cert-issuer-installation-error/1567/6 "2019-02-07T10:41:38Z")

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Apparently if running `sudo python3 setup.py experimental --blockchain=ethereum` outside of virtulenv instead of `python3 setup.py experimental --blockchain=ethereum` i don’t get any errors. But then again when running `cert-issuer -c conf.ini` i get the same error as virtualenv (AttributeError: ‘tuple’ object has no attribute ‘unsigned\_cert\_file\_name’).

Can anyone please help?

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<div class="post-metadata">

**Author:** ![aronning](https://avatars.discourse-cdn.com/v4/letter/a/47e85d/32.png) [@aronning](https://community.blockcerts.org/u/aronning)\
**Post date:** [February 8, 2019, 4:27pm UTC](https://community.blockcerts.org/t/ethereum-cert-issuer-installation-error/1567/7 "2019-02-08T16:27:39Z")

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Looks like someone from the community has fixed this: [https://github.com/blockchain-certificates/cert-issuer/pull/127](https://github.com/blockchain-certificates/cert-issuer/pull/127)

Could you try getting the latest version of the code and trying again?

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<div class="post-metadata">

**Author:** ![yoman](https://avatars.discourse-cdn.com/v4/letter/y/7bcc69/32.png) [@yoman](https://community.blockcerts.org/u/yoman)\
**Post date:** [February 11, 2019, 12:11pm UTC](https://community.blockcerts.org/t/ethereum-cert-issuer-installation-error/1567/8 "2019-02-11T12:11:42Z")

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Yeah, i figured it was an error in the code somewhere. I downloaded a previous version and it worked just fine. Good to know you fixed this in the latest version.