Error Starting a new Ionic project in Node js 6.11.2

You probably updated NodeJS incorrectly. My advice.

  1. Manually delete your NodeJS update. Drag and drop it into the recycle bin.
  2. Install nvm or nvm for Windows.
  3. Use nvm to install the current Node LTS.
  4. Once that is stable, install Ionic.
  5. DO NOT run any command as Administrator. Otherwise, uninstalling later might cause you problems.
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