error: initializer does not override a designated initializer from its superclass

swift for clion have problem "error: initializer does not override a designated initializer from its superclass"

Do you have any solution to my problem

main.swift

public class HelloSwift: MyClass {
     override init(text: String) {
          super.init (text: text)
    }

    convenience init() {
        self.init (text: "Hello Swift!")
    }

    func greet(persons: [String:String]) {
        for (name, location) in  persons {
            print("Hello \(name)")
            print("I hope the weather is nice in \(location)")
        }
    }
}

//HelloSwift().sayHello()
let start = HelloSwift()
start.seyHello()
let team = ["Pratumma","Yuranun","Pratumpan"]
start.greet(team)

MyClass.swift

public class MyClass {
    public var text: String

    init(text: String) {
        self.text = text

    }
    func sayHello() {
        print(text)
    }
}