hey I get this error

Exception in thread "main" java.lang.ClassNotFoundException: Module function cannot be found for the fully qualified name 'com.minki.ktor.ApplicationKt.main'

Try run it using Gradle task instead you use IDEA runner, often it doesn't work for me

tried task:run -> same error

The function needs to match this signature:

fun Application.main()

I checked again and now I see that this is Ktor exception, because apparently you don't have ApplicationKt.main function which returns ktor module, it should be a function without arguments, as Dico said above In your case your function has name

module

thanks it worked, I changed the conf file to use

module

modules = [ com.minki.ktor.ApplicationKt.module ]