Applications need to communicate with a server over the HTTP protocol to access back-end services. Angular provides a client HTTP API for Angular applications through the HttpClient service class in @angular/common/http. Reproducing the Issue *.service.ts Output Solution The NullInjectorError: No provider for _HttpClient! error typically indicates that the HttpClientModule or provideHttpClient has not been imported … Continue reading Angular Troubleshooting: How to Fix NullInjectorError: No provider for _HttpClient!