# Error installing cert-issuer on ethereum

**URL:** https://community.blockcerts.org/t/error-installing-cert-issuer-on-ethereum/1091
**Category:** Technical
**Created:** [June 6, 2018, 3:34pm UTC](https://community.blockcerts.org/t/error-installing-cert-issuer-on-ethereum/1091 "2018-06-06T15:34:51Z")
**Posts on this page:** 1
**Showing post:** 10

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### Author: ![eulerspython](https://avatars.discourse-cdn.com/v4/letter/e/858c86/32.png) [@eulerspython](https://community.blockcerts.org/u/eulerspython)
#### Post date: [June 13, 2018, 6:30pm UTC](https://community.blockcerts.org/t/error-installing-cert-issuer-on-ethereum/1091/10 "2018-06-13T18:30:14Z")

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I searched my computer and tried to find “merkle” in every METADATA file I could find.

This is the only METADATA file I could find that had any appearance of “merkle” in it:

 ![image](https://us1.discourse-cdn.com/flex016/uploads/blockcerts/original/1X/085255595bad703ef70802e1b248b0b044c0d209.png)  
 ![image](https://us1.discourse-cdn.com/flex016/uploads/blockcerts/original/1X/a6cba822dd15483901ac35052ab47248d58e4031.png)  
 ![image](https://us1.discourse-cdn.com/flex016/uploads/blockcerts/original/1X/90caaf4e06e3cfb02992ee2dd4dd88c89eec2808.png)

Where am I supposed to edit the merkletools requirements?

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_[View the full topic](https://community.blockcerts.org/t/error-installing-cert-issuer-on-ethereum/1091)._