scala.pickling.PicklingException: Tag scala.Some not recognized, looking for one of: scala.None.type, scala.Some[com.github.simbo1905.trex.internals.Accept]

picklingissues.scala

   // test case
         import scala.pickling.Defaults._
        import scala.pickling.shareNothing._
        import scala.pickling.binary._

          val p = PrepareAck(Identifier(1, ProposalNumber(2, 3), 4L), 5, Progress(ProposalNumber(6,7),Identifier(8,ProposalNumber(9,10),11L)), 12, 13, None)

          val b = p.pickle.value

          val pp = b.unpickle[PrepareAck]

          pp match {
            case `p` =>
          }
    // case classes
    
case class PrepareAck(request: Identifier, from: Int, progress: Progress, highestAcceptedIndex: Long, leaderHeartbeat: Long, highestUncommitted: Option[Accept]) extends PrepareResponse
case class Identifier(val from: Int, val number: ProposalNumber, val logIndex: Long) {
  override def toString = f"I(f=$from,n=$number,s=$logIndex)"
}
case class ProposalNumber(counter: Int, nodeIdentifier: Int) {
  def >(that: ProposalNumber) = if (this == that) false else if (this.counter > that.counter) true else if (this.counter < that.counter) false else this.nodeIdentifier > that.nodeIdentifier
  def >=(that: ProposalNumber) = if (this == that) true else if (this.counter > that.counter) true else if (this.counter < that.counter) false else this.nodeIdentifier > that.nodeIdentifier
  def <(that: ProposalNumber) = if (this == that) false else if (this.counter > that.counter) false else if (this.counter < that.counter) true else this.nodeIdentifier < that.nodeIdentifier
  def <=(that: ProposalNumber) = if (this == that) true else if (this.counter > that.counter) false else if (this.counter < that.counter) true else this.nodeIdentifier < that.nodeIdentifier
  override def toString = f"N(c=${counter.toLong-Int.MinValue},n=$nodeIdentifier)"
}
case class Accept(id: Identifier, value: Value) {
  def from = id.number.nodeIdentifier
}