Getting 404 error while downloading through nexus proxy repo

Hi Team ,

we have configured proxy repo. for npm artifacts (https://repo.backbase.com/artifactory/api/npm/npm-backbase/ as remote repo )

it shows online but while downloading artifacts it shows 404 error

using below URL for downloading artifacts

https://mydomain.com/repository/npm_repo_name/@backbase/foundation-ang/-/@backbase/foundation-ang-6.5.1.tgz/

Hi
Any update on this ?