Angular 2 - Module not found: Error: Can't resolve '@angular/material'

Question

I followed each steps described here: https://material.angular.io/guide/getting-started

Error I get

ERROR in ./src/app/app.module.ts
Module not found: Error: Can't resolve '@angular/material' in '/Users/isabelle/my-project/src/app'
@ ./src/app/app.module.ts 14:0-51
@ ./src/main.ts
@ multi webpack-dev-server/client?http://localhost:4200/ ./src/main.ts

What I did

npm install -g @angular/cli
ng new my-project
npm install --save @angular/material

In src/app/app.module.ts

import { MaterialModule } from '@angular/material';
    
    // other imports 
@NgModule({
    imports: [MaterialModule],
    ...
})   
export class PizzaPartyAppModule { }

Answer 1

I did that command again and everything ran smoothly

npm install --save @angular/material

Answer 2

npm install --save @angular/material

npm install --save @angular/cdk

restart dev server

(usually the console will tell you when there are dependencies, pay attention to it)

Answer 3

Simply add it to your project

ng add @angular/material