java.util.NoSuchElementException: next on empty iterator

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    GitHub | 3 years ago | raboof
    java.util.NoSuchElementException: next on empty iterator

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    Root Cause Analysis

    1. java.util.NoSuchElementException

      next on empty iterator

      at scala.collection.Iterator$$anon$2.next()
    2. Scala
      StringOps.head
      1. scala.collection.Iterator$$anon$2.next(Iterator.scala:39)
      2. scala.collection.Iterator$$anon$2.next(Iterator.scala:37)
      3. scala.collection.IndexedSeqLike$Elements.next(IndexedSeqLike.scala:63)
      4. scala.collection.IterableLike$class.head(IterableLike.scala:107)
      5. scala.collection.immutable.StringOps.scala$collection$IndexedSeqOptimized$$super$head(StringOps.scala:30)
      6. scala.collection.IndexedSeqOptimized$class.head(IndexedSeqOptimized.scala:126)
      7. scala.collection.immutable.StringOps.head(StringOps.scala:30)
      7 frames
    3. Unknown
      $anon$1$$anonfun$run$1.apply
      1. $anon$1$$anonfun$run$1.apply(<console>:23)
      2. $anon$1$$anonfun$run$1.apply(<console>:23)
      2 frames
    4. Scala
      ArrayOps$ofRef.groupBy
      1. scala.collection.TraversableLike$$anonfun$groupBy$1.apply(TraversableLike.scala:332)
      2. scala.collection.TraversableLike$$anonfun$groupBy$1.apply(TraversableLike.scala:331)
      3. scala.collection.IndexedSeqOptimized$class.foreach(IndexedSeqOptimized.scala:33)
      4. scala.collection.mutable.ArrayOps$ofRef.foreach(ArrayOps.scala:186)
      5. scala.collection.TraversableLike$class.groupBy(TraversableLike.scala:331)
      6. scala.collection.mutable.ArrayOps$ofRef.groupBy(ArrayOps.scala:186)
      6 frames
    5. Unknown
      $anon$1.run
      1. $anon$1.run(<console>:23)
      1 frame
    6. Helper
      HasRun$class.newRun
      1. Helper.HasRun$class.newRun(HasRun.scala:21)
      1 frame
    7. Unknown
      $anon$1.newRun
      1. $anon$1.newRun(<console>:19)
      1 frame