java.util.NoSuchElementException

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    • java.util.NoSuchElementException: head of empty list at scala.collection.immutable.Nil$.head(List.scala:318) at scala.collection.immutable.Nil$.head(List.scala:315) at scala.collection.mutable.Stack.pop(Stack.scala:140) at Macros$$anonfun$1.apply(Macros.scala:49) at Macros$$anonfun$1.apply(Macros.scala:47) at scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scala:237) at scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scala:237) at scala.collection.IndexedSeqOptimized$class.foreach(IndexedSeqOptimized.scala:34) at scala.collection.mutable.ArrayOps.foreach(ArrayOps.scala:39) at scala.collection.TraversableLike$class.map(TraversableLike.scala:237) at scala.collection.mutable.ArrayOps.map(ArrayOps.scala:39) at Macros$.printf_impl(Macros.scala:47)

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