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com.example.app.FBGraphAPI$User$3: 	at org.json4s.reflect.ScalaSigReader$.findClass(ScalaSigReader.scala:42)	at org.json4s.reflect.ScalaSigReader$.readConstructor(ScalaSigReader.scala:26)	at org.json4s.reflect.Reflector$ClassDescriptorBuilder.ctorParamType(Reflector.scala:108)	at org.json4s.reflect.Reflector$ClassDescriptorBuilder$$anonfun$6.apply(Reflector.scala:98)	at org.json4s.reflect.Reflector$ClassDescriptorBuilder$$anonfun$6.apply(Reflector.scala:95)	at scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scala:244)	at scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scala:244)	at scala.collection.immutable.List.foreach(List.scala:318)	at scala.collection.TraversableLike$class.map(TraversableLike.scala:244)	at scala.collection.AbstractTraversable.map(Traversable.scala:105)	at org.json4s.reflect.Reflector$ClassDescriptorBuilder.ctorParamType(Reflector.scala:95)	at org.json4s.reflect.Reflector$ClassDescriptorBuilder$$anonfun$constructorsAndCompanion$3$$anonfun$13.apply(Reflector.scala:149)	at org.json4s.reflect.Reflector$ClassDescriptorBuilder$$anonfun$constructorsAndCompanion$3$$anonfun$13.apply(Reflector.scala:122)	at scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scala:244)	at scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scala:244)	at scala.collection.mutable.ResizableArray$class.foreach(ResizableArray.scala:59)	at scala.collection.mutable.ArrayBuffer.foreach(ArrayBuffer.scala:47)	at scala.collection.TraversableLike$class.map(TraversableLike.scala:244)	at scala.collection.AbstractTraversable.map(Traversable.scala:105)	at org.json4s.reflect.Reflector$ClassDescriptorBuilder$$anonfun$constructorsAndCompanion$3.apply(Reflector.scala:122)	at org.json4s.reflect.Reflector$ClassDescriptorBuilder$$anonfun$constructorsAndCompanion$3.apply(Reflector.scala:116)	at scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scala:244)	at scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scala:244)	at scala.collection.IndexedSeqOptimized$class.foreach(IndexedSeqOptimized.scala:33)	at scala.collection.mutable.WrappedArray.foreach(WrappedArray.scala:34)	at scala.collection.TraversableLike$class.map(TraversableLike.scala:244)	at scala.collection.AbstractTraversable.map(Traversable.scala:105)	at org.json4s.reflect.Reflector$ClassDescriptorBuilder.constructorsAndCompanion(Reflector.scala:116)	at org.json4s.reflect.Reflector$ClassDescriptorBuilder.result(Reflector.scala:157)	at org.json4s.reflect.Reflector$.createDescriptor(Reflector.scala:50)	at org.json4s.reflect.Reflector$$anonfun$describe$1.apply(Reflector.scala:44)	at org.json4s.reflect.Reflector$$anonfun$describe$1.apply(Reflector.scala:44)	at org.json4s.reflect.package$Memo.apply(package.scala:39)	at org.json4s.reflect.Reflector$.describe(Reflector.scala:44)	at org.json4s.Extraction$.extract(Extraction.scala:304)	at org.json4s.Extraction$.extract(Extraction.scala:42)	at org.json4s.ExtractableJsonAstNode.extract(ExtractableJsonAstNode.scala:21)	at com.example.app.FBGraphAPI$.getUserDetails(FBGraphAPI.scala:24)