npm ERR! code E404
npm ERR! 404 Not Found - GET https://registry.npmjs.org/acorn/-/acorn-6.12.1.tgz
npm ERR! 404
npm ERR! 404  'acorn@6.12.1' is not in the npm registry.
npm ERR! 404 You should bug the author to publish it (or use the name yourself!)
npm ERR! 404 It was specified as a dependency of 'ui-ngx'
npm ERR! 404
npm ERR! 404 Note that you can also install from a
npm ERR! 404 tarball, folder, http url, or git url.

npm ERR! A complete log of this run can be found in:
npm ERR!     C:\Program Files\nodejs\node_cache\_logs\2020-06-02T08_35_50_411Z-debug.log