Unable to write log using log4net in different-2 file

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C#3.5

log4net

I am writting log using log4net and i am writting seprate file for exception and info.
But when i am writing any exception It's writting in both file. it should log only in Error file not in both file
Below is my configuration file :

<configSections>
    <section name="log4net" type="log4net.Config.Log4NetConfigurationSectionHandler,log4net" />
  </configSections>

  <log4net debug="true">
    <appender name="RollingLogFileAppender" type="log4net.Appender.RollingFileAppender">
      <file value=".\Log\ChatLog.log" />
      <appendToFile value="true" />
      <lockingModel type="log4net.Appender.FileAppender+MinimalLock" />
      <rollingStyle value="Size" />
      <maxSizeRollBackups value="10" />
      <maximumFileSize value="10MB" />
      <staticLogFileName value="true" />
      <layout type="log4net.Layout.PatternLayout">
        <filter type="log4net.Filter.LevelRangeFilter">
          <levelMin value="INFO" />
          <levelMin value="DEBUG" />
        </filter>
        <conversionPattern value="%level %username %message%newline" />
      </layout>
    </appender>

    <appender name="RollingErrorLogFileAppender" type="log4net.Appender.RollingFileAppender">
      <file value=".\Log\ErrorLog.log" />
      <appendToFile value="true" />
      <lockingModel type="log4net.Appender.FileAppender+MinimalLock" />
      <rollingStyle value="Size" />
      <maxSizeRollBackups value="10" />
      <maximumFileSize value="10MB" />
      <staticLogFileName value="true" />
      <layout type="log4net.Layout.PatternLayout">
        <filter type="log4net.Filter.LevelRangeFilter">
          <levelMin value="ERROR" />
          <levelMin value="WARNING" />
          <levelMax value="FATAL" />
        </filter>
        <conversionPattern value="%date [%thread] %level %logger - %message%newline" />
      </layout>
    </appender>
    <root>
      <level value="DEBUG" />
      <appender-ref ref="RollingLogFileAppender" />
      <appender-ref ref="RollingErrorLogFileAppender" />
    </root>
  </log4net>

------------------ And COde behind is ---------------

public static class ChatLogger
    {
        /// <summary>
        /// Enum for Log Type
        /// </summary>
        public enum LoggerType
        {
            Errorlog,
            Debuglog,
            Warninglog,
            Infolog,
            Fatellog
        }
        private static readonly ILog chatlog = LogManager.GetLogger("RollingLogFileAppender");
        private static readonly ILog errorlogs = LogManager.GetLogger("RollingErrorLogFileAppender");
        /// <summary>
        /// main method to log
        /// </summary>
        /// <param name="logMsg">log message</param>
        /// <param name="logType">log type</param>
        public static async Task WriteLog(string logMsg, string logType)
        {
            try
            {
                if (Convert.ToBoolean(ConfigurationManager.AppSettings["IsLogEnabled"].Trim()))
                {
                    log4net.Config.XmlConfigurator.Configure(new FileInfo(HttpContext.Current.Server.MapPath("~/Web.config")));  // Web version
                    switch (logType)
                    {
                        case "Debuglog":
                            await Task.Run(() => chatlog.Debug(logMsg));
                            break;
                        case "Errorlog":
                            string errorlog = logMsg.Length > 500 ? logMsg.Substring(0, 500) : logMsg;
                            await Task.Run(() => errorlogs.Error(errorlog));
                            break;
                        case "Warninglog":
                            string warnlog = logMsg.Length > 500 ? logMsg.Substring(0, 500) : logMsg;
                            await Task.Run(() => chatlog.Warn(warnlog));
                            break;
                        case "Infolog":
                            await Task.Run(() => chatlog.Info(logMsg));
                            break;
                        case "Fatellog":
                            string fatallog = logMsg.Length > 500 ? logMsg.Substring(0, 500) : logMsg;
                            await Task.Run(() => chatlog.Fatal(fatallog));
                            break;
                    }
                }
            }
            catch (Exception ex)
            {
                await Task.Run(() => chatlog.Error(ex.StackTrace.Length > 500 ? ex.StackTrace.Substring(0, 500) : ex.StackTrace));
            }
        }

---------------
Please tell me what setting or code i am missing.
Thanks
Sudheer

What I have tried:

i have tried all setting .

Please tell me what setting or code i am missing.