Do not return error if `Signed-By` value in source list is empty
This Merge request is based on the discussion in !358 (closed), maybe we can continue the discussion(if there is any) here instead of a closed Merge request
Edited by Aristo Chen
This Merge request is based on the discussion in !358 (closed), maybe we can continue the discussion(if there is any) here instead of a closed Merge request