How to fix Angular Cannot find module ‘@angular/http’ after ‘ng update’

When updating to Angular 8.x+, developers commonly encouter this type of error:

app/app.module.ts:9:42 - error TS2307: Cannot find module '@angular/http'.

9 import {HttpModule, RequestOptions} from '@angular/http';

The solution

The @angular/http module has been removed in recent versions of Angular and replaced by @angular/common/http.  Furthermore, there are some name changes that might need manual fixing, including:

• HttpModule ⇒ HttpClientModule
• Http ⇒ HttpClient
• URLSearchParams ⇒ HttpParams

Note that the replacements are not always exact equivalent and hence might require some work to get working

See the official @angular/http deprecation guide for more details on how to migrate.