What causes "there is no version associated with the channel %s" in hashicorp/packer?

Assign a version to the channel (run the publishing packer build, or assign one in the HCP Packer UI).

there is no version associated with the channel %s

Error message

there is no version associated with the channel %s

What it means

Returned when the requested HCP Packer channel exists but channel.Version is nil after a successful GetChannel() call. A channel in HCP Packer is a pointer to a version; a newly created channel (or one whose assigned version was removed) can be empty. Packer cannot resolve an image from an empty channel, so Execute() fails.

Source

Thrown at datasource/hcp-packer-artifact/data.go:195

			)
		}
	} else {
		log.Printf(
			"[INFO] Reading info from HCP Packer Registry (%s) "+
				"[project_id=%s, organization_id=%s, channel=%s]",
			d.config.BucketName, cli.ProjectID, cli.OrganizationID, d.config.ChannelName,
		)

		var channel *hcpPackerModels.HashicorpCloudPacker20230101Channel
		channel, err = cli.GetChannel(ctx, d.config.BucketName, d.config.ChannelName)
		if err != nil {
			return cty.NullVal(cty.EmptyObject), fmt.Errorf(
				"error retrieving channel from HCP Packer Registry: %s", err.Error(),
			)
		}

		if channel.Version == nil {
			return cty.NullVal(cty.EmptyObject), fmt.Errorf(
				"there is no version associated with the channel %s", d.config.ChannelName,
			)
		}
		channelID = channel.ID
		version = channel.Version
	}

	if *version.Status == hcpPackerModels.HashicorpCloudPacker20230101VersionStatusVERSIONREVOKED {
		return cty.NullVal(cty.EmptyObject), fmt.Errorf(
			"the version %s is revoked and can not be used on Packer builds", version.ID,
		)
	}

	var output DatasourceOutput

	cloudAndRegions := map[string][]string{}
	for _, build := range version.Builds {
		if build.Platform != d.config.Platform {

View on GitHub (pinned to eb36e3c3e4)

Solutions

Assign a version to the channel (run the publishing packer build, or assign one in the HCP Packer UI).
Verify the publishing pipeline targets the same bucket_name and project as this datasource.
Use version_fingerprint directly if you need a specific version instead of the channel pointer.
Check whether automation (revocation policies, cleanup jobs) recently unassigned the channel's version.

Example fix

// before
data "hcp-packer-artifact" "foo" {
  bucket_name = "my-bucket"
  channel_name = "staging" # no version assigned yet
}
// after: publish a build that bootstraps the channel, or assign a version in the HCP UI
data "hcp-packer-artifact" "foo" {
  bucket_name = "my-bucket"
  channel_name = "staging" # now pointing at a published version
}

Defensive patterns

Strategy: validation

Validate before calling

// Before running builds that consume the channel, assert it points at a version via the HCP API:
// GET /packer/2023-01-01/.../channels/<name> -> 200 with non-null version means safe to proceed.
if channelVersion == null {
    return fmt.Errorf("channel %s has no assigned version; refusing to build", channel)
}

Prevention

Bootstrap channels with `packer bootstrap` immediately after creating them.
Add a pipeline gate that fails if a channel has no assigned version.
Avoid creating channels before the first successful publish.

When it happens

Trigger: channel_name is set, GetChannel() succeeds, but the returned channel has a nil Version field — the channel was created but never assigned a version, or its version assignment was cleared/deleted.

Common situations: A 'staging' channel created before the first publish; a version was removed from the channel during revocation cleanup; the publishing pipeline targets a different bucket than the consuming datasource.

Related errors

AI-assisted analysis of hashicorp/packer@eb36e3c3e4 (2026-09-05). Data as JSON: /api/errors/f90a51e234c3b9f4. Report an issue: GitHub.