# \[Ruby on Rails\] After installing 'Yarn'

**URL:** <https://forum.freecodecamp.org/t/ruby-on-rails-after-installing-yarn/390866>\
**Category:** General\
**Created:** [May 18, 2020, 11:32pm UTC](https://forum.freecodecamp.org/t/ruby-on-rails-after-installing-yarn/390866 "2020-05-18T23:32:19Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![paulgureghian1](https://sea3.discourse-cdn.com/freecodecamp/user_avatar/forum.freecodecamp.org/paulgureghian1/32/142412_2.png) [@paulgureghian1](https://forum.freecodecamp.org/u/paulgureghian1)\
**Post date:** [May 18, 2020, 11:32pm UTC](https://forum.freecodecamp.org/t/ruby-on-rails-after-installing-yarn/390866/1 "2020-05-18T23:32:19Z")

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After installing ‘Yarn’ this error during creating new Rails app:

 ![Capture5](https://global.discourse-cdn.com/freecodecamp/original/3X/8/0/804c90b13a26aef2b0f2e2e923d124b2baef72cc.png)

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**Author:** ![ILM](https://sea3.discourse-cdn.com/freecodecamp/user_avatar/forum.freecodecamp.org/ilm/32/363239_2.png) [@ILM](https://forum.freecodecamp.org/u/ILM)\
**Post date:** [June 1, 2021, 6:53pm UTC](https://forum.freecodecamp.org/t/ruby-on-rails-after-installing-yarn/390866/2 "2021-06-01T18:53:27Z")

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Closed on June 1, 2021, 6:53pm UTC