java.lang.NumberFormatException: For input string: "ac65beda7e31487a"

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java.lang.NumberFormatException: For input string: "ac65beda7e31487a"	at java.lang.NumberFormatException.forInputString(NumberFormatException.java:65)	at java.lang.Long.parseLong(Long.java:589)	at java.lang.Long.parseLong(Long.java:631)	at com.nike.wingtips.zipkin.util.WingtipsToZipkinSpanConverterDefaultImpl.nullSafeLong(WingtipsToZipkinSpanConverterDefaultImpl.java:72)	at com.nike.wingtips.zipkin.util.WingtipsToZipkinSpanConverterDefaultImpl.convertWingtipsSpanToZipkinSpan(WingtipsToZipkinSpanConverterDefaultImpl.java:30)	at com.nike.wingtips.zipkin.WingtipsToZipkinLifecycleListener.spanCompleted(WingtipsToZipkinLifecycleListener.java:97)	at com.nike.wingtips.Tracer.notifySpanCompleted(Tracer.java:664)	at com.nike.wingtips.Tracer.completeAndLogSpan(Tracer.java:547)	at com.nike.wingtips.Tracer.completeRequestSpan(Tracer.java:470)	at SparkServer.lambda$main$1(SparkServer.java:44)	at spark.RouteImpl$1.handle(RouteImpl.java:58)	at spark.webserver.MatcherFilter.doFilter(MatcherFilter.java:162)	at spark.webserver.JettyHandler.doHandle(JettyHandler.java:61)	at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:189)	at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141)	at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:119)	at org.eclipse.jetty.server.Server.handle(Server.java:517)	at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:302)	at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:242)	at org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:245)	at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:95)	at org.eclipse.jetty.io.SelectChannelEndPoint$2.run(SelectChannelEndPoint.java:75)	at org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.produceAndRun(ExecuteProduceConsume.java:213)	at org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.run(ExecuteProduceConsume.java:147)	at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:654)	at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:572)	at java.lang.Thread.run(Thread.java:745)