Hi, I am using custom data class(Address) in mutat...

# kgraphql

[Tomas Kormanak]

Hi, I am using custom data class(Address) in mutation input an got this error:

Introspection must provide output type for fields, but received: Address!.

Used data classes:

data class Address(
    val label: String? = null,
    val street: String? = null,
    val city: String? = null,
)
data class ChangeAddress(
    val userid:Id,
    val address: Address,
)

Mutation is defined like this:

mutation("changeAddress") {
    resolver { input: ChangeAddress, context: Context ->
        // change the addresss.....            
    }
}

What could be the problem?

[Tomas Kormanak]

Solved.. It was caused by using the same data class in type and input type.