Unity "No valid Unity Editor version found" in GameCI

GameCI picks the editor image from your project ProjectVersion.txt or the unityVersion input. If that version has no published unityci/editor image, the job cannot find an editor to run.

What this error means

The builder fails before activation with "No valid Unity Editor version found" or a Docker pull error for unityci/editor:<version> that does not exist.

unity

Error: No valid Unity Editor version found for 2022.3.99f1.
manifest for unityci/editor:ubuntu-2022.3.99f1-... not found

Common causes

The exact version has no prebuilt image

GameCI publishes images for released editor versions. A typo, an unreleased version, or a brand-new patch with no image yet cannot be pulled.

ProjectVersion.txt and the input disagree

A mismatch between ProjectSettings/ProjectVersion.txt and the unityVersion input points GameCI at a version that has no image.

How to fix it

Pin a version that has an image

Read the exact m_EditorVersion in ProjectSettings/ProjectVersion.txt.
Confirm a matching unityci/editor tag exists for that version.
Set unityVersion to that value (or to auto to read it from the project).

.github/workflows/ci.yml

- uses: game-ci/unity-builder@v4
  with:
    unityVersion: 2022.3.21f1
    targetPlatform: StandaloneLinux64

Upgrade the project to a published version

If you need a version with no image yet, bump the project to the nearest released patch that GameCI publishes.

How to prevent it

Keep ProjectVersion.txt on a released editor version.
Verify the unityci/editor tag exists before pinning it.
Use unityVersion: auto to read the version from the project.