Firebase通知和Firebase数据库功能在我的应用中无法同时运行

I'm a new user to stack overflow but have been using the website anonymously for several months now. I've integrated Firebase into my iOS 10 (Swift 3) app, everything works fine but if I use Firebase Database, then I will not be able to use Firebase Notifications (meaning I won't receive my remote notifications that I have sent using Firebase).I'm a new user to stack overflow but have been