Hello guys, I am having a challenge with returning...

# ktor

[IsaacMart]

Hello guys, I am having a challenge with returning my response sealed class. I think is something to do with serialization but haven't been able to figure it out yet.
My error: Problem retrieving User.Try again later! Serializer for class 'Success' is not found. Mark the class as @Serializable or provide the serializer explicitly.