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kotlinlang

Hi everyone, I’ve desperately trying for *hours* (not kidding) to get `kotlinx-serialization` to work. I’ve tried any reasonable set up I can think of, but the code fails at runtime saying:
```Serializer for class 'SpsRecordIn' is not found.
Mark the class as @Serializable or provide the serializer explicitly.```
However:
```import kotlinx.serialization.Serializable
...
@Serializable
data class SpsRecordIn(...)```
This is in my `build.gradle.kts` :
```plugins {
  application
  kotlin("jvm") version "1.5.10"
  kotlin("plugin.serialization") version "1.5.10"
}```
Can anyone help?

have you tried deleting the `build` folder and doing `File -&gt; Invalidate Caches` ?

Do you add serialization runtime dependency?

<https://kotlinlang.slack.com/archives/C0922A726/p1622407116336300?thread_ts=1622401962.336100&amp;cid=C0922A726>