failed

ExecError: ExecError: (1) Successfully verified SCT... WARNING: Image reference ghcr.io/containerbase/node:20.19.1 uses a tag, not a digest, to identify the image to sign. This can lead you to sign a different image than the intended one. Please use a digest (example.com/ubuntu@sha256:abc123...) rather than tag (example.com/ubuntu:latest) for the input to cosign. The ability to refer to images by tag will be removed in a future release. Error: signing [ghcr.io/containerbase/node:20.19.1]: accessing entity: entity not found in registry, error: GET https://ghcr.io/v2/containerbase/node/manifests/20.19.1: MANIFEST_UNKNOWN: manifest unknown error during command execution: signing [ghcr.io/containerbase/node:20.19.1]: accessing entity: entity not found in registry, error: GET https://ghcr.io/v2/containerbase/node/manifests/20.19.1: MANIFEST_UNKNOWN: manifest unknown