NotImplementedError in JsonBuilder.scala:34

[olafurpg]

❯ lsif-java index
java.util.concurrent.ExecutionException: Boxed Exception
	at scala.concurrent.impl.Promise$.scala$concurrent$impl$Promise$$resolve(Promise.scala:99)
	at scala.concurrent.impl.Promise$Transformation.handleFailure(Promise.scala:408)
	at scala.concurrent.impl.Promise$Transformation.run(Promise.scala:470)
	at java.base/java.util.concurrent.ForkJoinTask$RunnableExecuteAction.exec(ForkJoinTask.java:1426)
	at java.base/java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:290)
	at java.base/java.util.concurrent.ForkJoinPool$WorkQueue.topLevelExec(ForkJoinPool.java:1020)
	at java.base/java.util.concurrent.ForkJoinPool.scan(ForkJoinPool.java:1656)
	at java.base/java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1594)
	at java.base/java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:183)
Caused by: scala.NotImplementedError: an implementation is missing
	at scala.Predef$.$qmark$qmark$qmark(Predef.scala:344)
	at moped.json.PrimitiveBuilder.addObjectMember(JsonBuilder.scala:34)
	at moped.json.ObjectMergerTraverser.traverseMember(ObjectMergerTraverser.scala:41)
	at moped.json.JsonTraverser.$anonfun$traverseObject$1(JsonTraverser.scala:52)
	at moped.json.JsonTraverser.$anonfun$traverseObject$1$adapted(JsonTraverser.scala:51)
	at scala.collection.immutable.List.foreach(List.scala:333)
	at moped.json.JsonTraverser.traverseObject(JsonTraverser.scala:51)
	at moped.json.ObjectMergerTraverser.traverseObject(ObjectMergerTraverser.scala:37)
	at moped.json.JsonTraverser.traverse(JsonTraverser.scala:12)
	at moped.json.JsonTraverser.traverse(JsonTraverser.scala:4)