25: Cannot invoke initializer for type 'Holder<_>' with an argument list of type '(ObjectWithValue)'

ClassType.swift

class Holder<T: AnyObject> {
    var value: T? = nil
    
    init() {
        self.value = nil
    }
    
    init(_ value: T) {
        self.value = value
    }
}

protocol ObjectWithValue: class {
    var string: String { get }
}

class MyObject: ObjectWithValue {
    var string: String = "test"
}

let object = MyObject()
let holder1 = Holder(object)

let objectByProtocol: ObjectWithValue = object
let holder2 = Holder(objectByProtocol)

let holder3 = Holder<ObjectWithValue>()
holder2.value = object

25: Cannot invoke initializer for type 'Holder<_>' with an argument list of type '(ObjectWithValue)'
27: 'Holder' requires that 'ObjectWithValue' be a class type