```@Serializable data class Reader( var name : String = "", var photoUrl : String = ...

# ktor

[manlan]

@Serializable
data class Reader(
        var name : String = "",
        var photoUrl : String = "",
        var address : Address = Address())

Kotlinx Serialization setup

[manlan]

When I configure Kotlinx Serialization in this way,

Untitled.txt

[manlan]

and try to POST some JSON, I get this error:

Untitled.txt

[manlan]

Address is this

Untitled

[manlan]

Can somebody point me to setting up this properly?

[rudolf.hladik]

Do you have kotlinx-serialization gradle plugin applied?

[jorge.rego]

The message is saying about a class “Reader”. Do you have any class in your code called like that missing a @Serializable annotation?

[manlan]

@rudolf.hladik The docs (https://ktor.io/servers/features/content-negotiation/serialization-converter.html) didn't mention about applying a plugin. Thanks a lot!

[manlan]

@jorge.rego Indeed! I posted it as the first message in this same thread 🙂

[rudolf.hladik]

@manlan it’s only in kotlinx.serialization, https://github.com/Kotlin/kotlinx.serialization

[manlan]

Yes, that's where I saw the guide. But ktor should improve the docs, which is being done anyway 🙂

[jorge.rego]

Actually I think docs are pretty ok, at least in server side, compared with other tools. Maybe it is just the amount of things you can do… xD
It is a bit weird that you need to apply a plugin… with Gson it is not needed for serialization…

[rudolf.hladik]

because Gson uses reflection, kotlinx.serialization don’t