Getting npm Warn error when installing grunt?

Question

Node.js

C:\Users\User>npm install -g grunt-cli
npm WARN deprecated [email protected]: Critical bug fixed in v2.0.1, please upgrade to the latest version.
npm WARN deprecated [email protected]: Critical bug fixed in v3.0.1, please upgrade to the latest version.
npm WARN deprecated [email protected]: Critical bug fixed in v3.0.1, please upgrade to the latest version.
C:\Users\User\AppData\Roaming\npm\grunt -> C:\Users\User\AppData\Roaming\npm\node_modules\grunt-cli\bin\grunt
+ [email protected]
updated 1 package in 15.857s

Answer 1

Hey! Yesterday I got the same error. Cured npm uninstall [email protected]
npm uninstall [email protected]
npm uninstall [email protected]
npm install [email protected] -g
npm install [email protected] -g
and in the project folder
npm install [email protected]
npm install [email protected]