A modern programming language that makes developers happier.

kotlinlang

```Exception in thread "pool-1-thread-1" java.util.ConcurrentModificationException
        at java.base/java.util.ArrayList$Itr.checkForComodification(ArrayList.java:1042)
        at java.base/java.util.ArrayList$Itr.next(ArrayList.java:996)
        at com.beust.klaxon.World.foundValue$klaxon(World.kt:109)
        at com.beust.klaxon.KlaxonParser$1$7.invoke(KlaxonParser.kt:116)
        at com.beust.klaxon.KlaxonParser$1$7.invoke(KlaxonParser.kt:9)
        at com.beust.klaxon.StateMachine.next(StateMachine.kt:20)
        at com.beust.klaxon.KlaxonParser.fullParseLoop(KlaxonParser.kt:63)
        at com.beust.klaxon.KlaxonParser.parse(KlaxonParser.kt:25)```