node.js err

This utility will walk you through creating a package.json file.
It only covers the most common items, and tries to guess sensible defaults.

See `npm help json` for definitive documentation on these fields
and exactly what they do.

Use `npm install <pkg>` afterwards to install a package and
save it as a dependency in the package.json file.

Press ^C at any time to quit.
npm ERR! code EINVALIDTAGNAME
npm ERR! Invalid tag name "simple server": Tags may not have any characters that encodeURIComponent encodes.
About to write to I:\01 Web\12 JavaScript FULL STACK\Practice\Node\simple server\package.json:

{
  "name": "",
  "version": ""
}


Is this ok? (yes) no
Aborted.

npm ERR! A complete log of this run can be found in:
npm ERR!     C:\Users\Swensens\AppData\Roaming\npm-cache\_logs\2017-12-26T22_15_16_350Z-debug.log