<Why am I getting a java.lang.ClassCastException i...

# stackoverflow

[user]

Why am I getting a java.lang.ClassCastException in Kotlin?
I wrote this sample code that I extracted from a library that I'm making because it is causing a java.lang.ClassCastException and I don't understand why. Here's the code:
interface Event

data class Update(val message: Message?)
open class Message(open val text: String?)
data class TextMessage(override val text: String) : Message(text = text)

class MessageReceiveEvent(
val message: Message,
) : Event

class TextMessageReceiveEvent(
val message: TextMessage,
) : Event

fun...