How to fix this error "Uncaught (in promise): Error: StaticInjectorError(AppModule)" in Angular 7

[Jenny]

Hi,

How to fix this error in Angular 7 occurs when try to retrieve data from web apis?

ERROR Error: Uncaught (in promise): Error: StaticInjectorError(AppModule)[AgentcategorylistingComponent -> ApiService]: 

  StaticInjectorError(Platform: core)[AgentcategorylistingComponent -> ApiService]: 

    NullInjectorError: No provider for ApiService!

Error: StaticInjectorError(AppModule)[AgentcategorylistingComponent -> ApiService]: 

  StaticInjectorError(Platform: core)[AgentcategorylistingComponent -> ApiService]: 

    NullInjectorError: No provider for ApiService!

AgentcategorylistingComponent >> is a Component

ApiService  >> is a Service

[Arnaud Deman]

Hi Jenny,

I think you need to specify how your service is provided: see the providers section of the angular docs.

For instance, to make your service accessible from anywhere in your application you could add this in @Injectable :

@Injectable({

providedIn: 'root'

})

export class APIService

Regards,

Arnaud.

[Jenny]

Hi Arnaud,

Thanks for your great help. It is working. Thanks a lot.

Regards,

Jenny