:【$injector:unpr】angularjs中的未知提供者无法将工厂注入控制器

I have an unknown provider error and I'm not sure how to solve it. I think my services, controllers are declared properly. I have tried everything but it doesn't work. my photosFactory factory doesn't work. it's not injected into controller. I'd appreciate any help. I have an unknown provider error and I'm not su