---
title: "How do I resolve a \"Yarn not found\" error?"
date: "2025-05-27T09:47:58+00:00"
summary: "Resolve \"Yarn not found\" error in Test Drupal stage with simple .gitlab-ci.yml modifications. Easy fix for developers."
image:
type: "article"
url: "/acquia-cloud-platform/add-ons/code-studio/help/69316-how-do-i-resolve-yarn-not-found-error"
id: "85c837d5-ee05-4292-b29b-8b6f77ac29fa"
---

**Description**

**Build stage**

**Job**

**Error message**

**Category**

**Responsibility**

[Test Drupal](https://docs.acquia.com/acquia-cloud-platform/add-ons/code-studio/docs/customizing-code-studio/drupal-auto-devops/autodevops-jobs#section-test-drupal-stage)

[Test Drupal](https://docs.acquia.com/acquia-cloud-platform/add-ons/code-studio/docs/customizing-code-studio/drupal-auto-devops/autodevops-jobs#section-test-drupal-job)

`Yarn not found`

Application

Customer

**Solution**

You can use yarn by adding the following lines in the `.gitlab-ci.yml` file:

    Test Drupal:
      before_script:
        - eval $YARN_PACKAGE
        - eval $YARN_PATH