task_hello_world.yml got error

[mehdishahdoost]

Hi all
When I ran task_hello_world.yml on my concourse instance got below error:

resource script '/opt/resource/check []' failed: exit status 1

stderr:
failed to fetch digest: 403 Forbidden

errored

My concourse's instance runs on host without internet connection, but busybox docker image is available on host machine. Does anybody have an idea for solving this issue?