What is this ```java lang VerifyError class kotlinx serializ kotlinlang #serialization

java.lang.VerifyError: class kotlinx.serialization.json.internal.StreamingJsonDecoder overrides final method kotlinx.serialization.encoding.AbstractDecoder.decodeSerializableElement(Lkotlinx/serialization/descriptors/SerialDescriptor;ILkotlinx/serialization/DeserializationStrategy;Ljava/lang/Object;)Ljava/lang/Object;

Petter Måhlén

06/29/2022, 11:37 AM

could it be a version mismatch between

kotlinx-serialization-core

and

kotlinx-serialization-json

ribesg

06/29/2022, 11:39 AM

Maybe. I get this crash in a script which depends on a kmp lib. The kmp lib has this dependency, among others.

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"commonMainApi"("org.jetbrains.kotlinx:kotlinx-serialization-json:${Versions.serialization}")

Maybe explicitly adding the dependency on

core

too can help, I’ll try it

A bad version of

core

could be imported as a transitive dependency of another dependency like ktor or something

That doesn’t seem to work

It started from a version that had a few changes, but one of them is adding dependency to ktor resources plugin so maybe it’s a transitive dependency of that

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"commonMainApi"("io.ktor:ktor-client-resources:${Versions.ktor}")

I fixed it by adding this

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"commonMainApi"("org.jetbrains.kotlinx:kotlinx-serialization-core:${Versions.serialization}")

and tweaking the dependency on

ktor-client-resources

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"commonMainApi"("io.ktor:ktor-client-resources:${Versions.ktor}") {
    exclude("org.jetbrains.kotlinx", "kotlinx-serialization-core")
}

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