Hi everyone, I'm trying to upgrade from kotlin 1.4...

# graphql-kotlin

[Kanu]

Hi everyone,
I'm trying to upgrade from kotlin 1.4 to 1.5 in the project with expedia v3.6.1 and get the following error:

Caused by: com.expediagroup.graphql.exceptions.InvalidInputFieldTypeException: Argument cannot be an interface or a union, parameter #2 output of fun aaa.FuzzyDate.`write$Self`(aaa.FuzzyDate, kotlinx.serialization.encoding.CompositeEncoder, kotlinx.serialization.descriptors.SerialDescriptor): kotlin.Unit

It sounds like red herring to me but maybe there is something I can fix?
Or is it incompatibility between expedia 3 and kotlin 1.5?
The class that is failing looks like this

@Generated
@Serializable
data class FuzzyDate(val year: Int? = null, val month: Int? = null, val day: Int? = null, val current: Boolean? = false)

[Kanu]

I'm actually planning to upgrade expedia to v5 as well but would like to do it step by step if possible

[Kanu]

ok, apparently the answer is here
https://kotlinlang.slack.com/archives/CQLNT7B29/p1629542546026100?thread_ts=1627457725.068200&cid=CQLNT7B29