Angular Injectable decorator - Expected 0 arguments but got 1

Question

I am just getting started with the base tutorial for Angular but I face a small compilation issue.

I am following the tutorial on Angular\'s website. I am stuck with

Answer 1

I also had this problem, and I have resolved it including the name of the class service in "Providers" in app.module.ts.

like this:

@NgModule({
    declarations:[

    ],
    imports:[
        CommonModule,
        HttpClientModule
    ],
    exports:[

    ],
    providers: [
        PostListService 
    ]
})