hello AgitatedDove14
thanks for your reply.

yes, the HTTP link is valid I was able to download it using wget I'm doubtful if it was an inconsistency
right now this seems to be solved for me.
previously I was using ${V3M_step.artifacts.Detections} - which will return a dictionary
on changing it to ${V3M_step.artifacts.Detections.url} (the url of the artifact) is returned and this seemed to have helped.