Paginação não funciona!

Ao implementar a paginação das fotos recebidas do backend a pagina continua mostrando todas as fotos!

Service:

import { Injectable } from "@angular/core";
import { HttpClient, HttpParams } from "@angular/common/http";

import { Photo } from "./photos";

const endereco = 'http://localhost:3000';

@Injectable({
    providedIn:"root"
})
export class PhotoService {

    private http: HttpClient;

    constructor(http: HttpClient) {
        this.http = http;
    }
    /*
    listFromUser(userName: string) {
        return this.http.get<Photo[]>(endereco + '/' + userName +'/photos');   // retorna dados do tipo Photo
    }
    */
    listFromUserPaginated(userName: string, page: number) {
        const params = new HttpParams()
            .append('page', page.toString());
        return this.http.get<Photo[]>(endereco + '/' + userName +'/photos', { params });   // retorna dados do tipo Photo
    }
}

Resolver:

import { Injectable } from "@angular/core";
import { Resolve, ActivatedRouteSnapshot, RouterStateSnapshot } from "@angular/router";
import { Observable } from "rxjs";

import { PhotoService } from "../photo/photo.service";
import { Photo } from "../photo/photos";

@Injectable({
    providedIn: 'root'
})
export class PhotoListResolver implements Resolve<Observable<Photo[]>>{   

    constructor(private service: PhotoService){  }

    resolve(route: ActivatedRouteSnapshot, state: RouterStateSnapshot): Observable<Photo[]> {
        const userName = route.params.userName;
        return this.service.listFromUserPaginated(userName, 1);
    }
}