java.lang.ClassCastException: scala.collection.immutable.$colon$colon cannot be cast to scala.collection.mutable.ArrayBuffer

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via JIRA by Bryan J Swift, 1 year ago
scala.collection.immutable.$colon$colon cannot be cast to scala.collection.mutable.ArrayBuffer
via JIRA by Bryan J Swift, 1 year ago
scala.collection.immutable.$colon$colon cannot be cast to scala.collection.mutable.ArrayBuffer
java.lang.ClassCastException: scala.collection.immutable.$colon$colon cannot be cast to scala.collection.mutable.ArrayBuffer
at com.mongodb.casbah.MongoCollectionBase$class.group(MongoCollection.scala:527)
at com.mongodb.casbah.MongoCollection.group(MongoCollection.scala:920)

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