问Nlog未记录堆栈跟踪

EN

<nlog xmlns="http://www.nlog-project.org/schemas/NLog.xsd"
      xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
    <targets>
      <target name="file" xsi:type="File" fileName="${basedir}/log${shortdate}.txt" archiveAboveSize="500000" archiveEvery="Day" archiveNumbering="Rolling" maxArchiveFiles="10" layout="${date:format=s}|${level}|${callsite}|${identity}|${message}|${exception:format=stacktrace}"/>
      <!--<target name="console" xsi:type="Console" />-->
    </targets>
    <rules>
      <logger name="*" minlevel="Debug" writeTo="file" />
      <!--<logger name="*" minlevel="Debug" writeTo="console" />-->
    </rules>
  </nlog>

public void Error(string message, Exception ex)
    {
        logger.Error(message, ex);
    }