error.effects.ts

handleError$ = createEffect(
      () =>
        this.actions$.pipe(
          ofType(ErrorActions.errorMessage),
          map(action => action.errorMsg),
          tap(errorMsg => console.error('Got error:', errorMsg)),
          map(errorMsg => {

            const msg: SnackBarInterface = {
              message: errorMsg,
              color: AppearanceColor.Error
          };

          return SnackBarActions.open({payload: msg})
          } )
        ),
    );