webpack-dev-server could not start

[Optionalnickel4]

Steps to Reproduce

Error

'webpack-dev-server' is not recognized as an internal or external command,
operable program or batch file.

Editor Details

Version: 1.0.0
Mixer User ID: 21500

Encrypted Editor State: {"id":"913cac0ec4f06fc7","password":"yqRI5bwA4Dch1Q+d5HCfmQFg7ryqsyZPd9GXuCCbrug="}