[Dúvida] Erro de NullInjectorError

Bom dia, tudo bem ? Eu estou usando o Angular 14 e seguindo o tutorial do professor continua dando erro de NullInjectorError

Estou usando outra API

Service

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


const API = 'https://rickandmortyapi.com/api'


export interface Response{
    result:Array<PersonagemItem>
}

export interface PersonagemItem{
    name:string,
    image:string,
}

Injectable({ providedIn: 'root' })
export class PhotoService{

    constructor (private http:HttpClient){

    }

    listfromCharacter(character:string){
       return this.http
        .get<Response>(API+'/character')

    }
}

App component

import { Component } from '@angular/core';
import { PersonagemItem,Response, PhotoService } from './photos/photo/photo.service';





@Component({
  selector: 'app-root',
  templateUrl:  './app.component.html',
  styleUrls: ['./app.component.css']
})
export class AppComponent {
  character:PersonagemItem[]=[]

  constructor (photoService:PhotoService){
    photoService
    .listfromCharacter('all')
    .subscribe(characters=>this.character = characters.result)
  }

}