Ionic serve not working in Ionic 3

Question

My Ionic info:

cli packages: (/usr/lib/node_modules)

@ionic/cli-utils  : 1.9.2
ionic (Ionic CLI) : 3.9.2

global packages:

Cordova CLI : 7.0.1 

local pack         


        

Answer 1

Use "npm install" and then "gulp build" & "gulp serve". Also make sure you update all the dependencies. Check versions of your dependencies by "ionic info".