Cannot find module '@angular-devkit/core'

Question

I have created a angular project with Angular CLI: 1.6.3 Node: 9.4.0 OS: linux x64 version. But when want to run my angular app with command ng serve then fetch this error

Answer 1

package.json, change to "@angular/cli": "^1.6.5",

 "devDependencies": {
"@angular/cli": "^1.6.5",
"@angular/compiler-cli": "^5.0.0",

Important, the version could be vary depends on what time.

You really should run

 npm update -g @angular/cli 

first, to get version, my is 1.6.5

What does the "^" do?

 ~1.0.2 means to install version 1.0.2 or the latest patch version such as 1.0.4. 

  ^1.0.2 means to install version 1.0.2 or the latest minor or patch version such as 1.1.0.

last, run this

   npm update