It is important to save the tarball URL as "relative-path" (without the leading '/').
Sometimes registries are located in a subdirectory of a website.
For instance, https://mycompany.jfrog.io/mycompany/api/npm/npm-local/
So the tarball location should be relative to the directory,
it is not an absolute-path reference.
So we add @mycompany/mypackage/-/@mycompany/mypackage-2.0.0.tgz
not /@mycompany/mypackage/-/@mycompany/mypackage-2.0.0.tgz
PR #1834close#1827