I try to install email@example.com (https://www.npmjs.com/package/protoduck) from my Nexus OSS 3.14.0-04 configured as NPM proxy.
NPM responds with error "npm ERR! 404 Not Found: protoduck@latest" and Nexus logs "Invalid JSON input" (complete stack-trace in attachment).
This package is successfully installed when directly calling registry.npmjs.org
Related issue https://github.com/zkat/protoduck/issues/6