francis@ubuntu:~/Downloads/microscope$ yarn install
yarn install v1.9.4
warning You are using Node “4.2.6” which is not supported and may encounter bugs or unexpected behavior. Yarn supports the following semver range: “^4.8.0 || ^5.7.0 || ^6.2.2 || >=8.0.0”
warning package-lock.json found. Your project contains lock files generated by tools other than Yarn. It is advised not to mix package managers in order to avoid resolution inconsistencies caused by unsynchronized lock files. To clear this warning, remove package-lock.json.
[1/4] Resolving packages…
[2/4] Fetching packages…
error An unexpected error occurred: “https://registry.npmjs.org/cosmConfig/-/cosmConfig-4.0.0.tgz: Request failed “404 Not Found””.
info If you think this is a bug, please open a bug report with the information provided in “/home/francis/Downloads/microscope/yarn-error.log”.
info Visit https://yarnpkg.com/en/docs/cli/install for documentation about this command.