Github user robcube commented on the issue:
https://github.com/apache/log4net/pull/16
Getting a weird error using .net core 1.1:
```
var logRepository = LogManager.GetRepository(Assembly.GetEntryAssembly());
XmlConfigurator.ConfigureAndWatch(logRepository, new
FileInfo("log4net.config.xml"));
ILog Log = LogManager.GetLogger(typeof(Program));
Log.Debug("hey!");
```
at last line results in:
```
System.ArgumentException: Invalid name character in 'log4j:event'. The ':'
character, hexadecimal value 0x0x3A, cannot be included in a name.
at System.Xml.XmlWellFormedWriter.CheckNCName(String ncname)
at System.Xml.XmlWellFormedWriter.WriteStartElement(String prefix,
String localName, String ns)
at log4net.Layout.XmlLayoutSchemaLog4j.FormatXml(XmlWriter writer,
LoggingEvent loggingEvent)
at log4net.Layout.XmlLayoutBase.Format(TextWriter writer, LoggingEvent
loggingEvent)
at log4net.Appender.FileAppender.Append(LoggingEvent loggingEvent)
at log4net.Appender.AppenderSkeleton.DoAppend(LoggingEvent loggingEvent)
```
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