I am running into a `java.lang.NoClassDefFoundError: kotlinx/serialization/json/Json` when executing...

# multiplatform

[Tobi]

I am running into a java.lang.NoClassDefFoundError: kotlinx/serialization/json/Json when executing tests in a multiplatform project.

Any help would be much appreciated 🙏

[Tobi]

It seems to be related to the multiplatform target. If I change it from android to jvm it works 🤔

[h0tk3y]

May be a known issue: https://youtrack.jetbrains.com/issue/KT-29343
Could you please try to add the appropriate kotlinx.serialization runtime dependency to the corresponding Android's configuration? Like this, on top-level:

dependencies { 
    testImplementation "org.jetbrains.kotlinx:kotlinx-serialization-runtime:$serialization_version"
}

[Tobi]

that fixed it 👍