Error in Swift: property not initialized at super.init call

Hello! I'm new to Swift and encountered an error I can't understand. I'm writing a simple notes app. I have a base class `Note` and a subclass `TaskNote` that adds a deadline date. Here's the code: ```swift class Note { var title: String var content: String init(title: String, content: String) { self.title = title self.content = content } } class TaskNote: Note { var deadline: Date init(title: String, content: String, deadline: Date) { self.deadline = deadline super.init(title: title, content: content) } } ``` When compiling, Xcode gives the error: "Property 'self.deadline' not initialized at super.init call". I thought I should assign the new property first, then call...