When on any repository page, eg. https://archive.softwareheritage.org/browse/origin/https://github.com/SoftwareHeritage/swh-core/directory/ , clicking Actions>Downloads>as tarball (or as git) sends a GET to https://archive.softwareheritage.org/api/1/vault/directory/30103e19ba4b9f1c16640d63cab69a3dcd0e8e9f/ , which returns a 500 error and the body is: `{"exception":"RemoteException","reason":"404 not found"}`