Hi @Deepika,
Ok, so this is a Yocto build and you are following this tutorial Docker, right?
Are you using the docker-artifact-gen script as provided here? mender-update-modules/docker/module-artifact-gen/docker-artifact-gen at master · mendersoftware/mender-update-modules · GitHub
Can you possibly drop the output of mender-artifact read on the artifact?
Greetz,
Josef