NullPointException

[smallshen]

Exception in thread "main" java.lang.NullPointerException: ScriptEngineManager(clas…tEngineByExtension("kts") must not be null

[smallshen]

It can run in IDE but with after build it with shadowJar into a standalone jar, it starts throwing NullPointException

[tonybaines]

I experienced the same thing, after much experimentation with dependencies and alternative ways of building the single JAR I switched to using separate JARs for my code and a libs/ folder for dependencies and everything resolved.
I can only assume it's a classpath thing, but I don't know how I might correct it otherwise.

[PegasisForever]

I found a solution, see https://youtrack.jetbrains.com/issue/KT-43813#focus=Comments-27-5657593.0-0