为什么我将json解析为Java List，而不是Scala List？

I am attempting to parse a json object that contains a list. I am able to parse the list if the field is backed by a Java List, but it fails if the field is backed by a Scala list. What is the difference between parsing into a Scala List vs a Java List, and what do I have to change to be able to parse this into a Scala List?I am attempting to parse a json object that con