working on debug output

Signed-off-by: Stephan Richter <s.richter@srsoftware.de>

core/src/main/java/de/srsoftware/umbrella/core/Util.java

@@ -98,7 +98,7 @@ public class Util {
 			return MARKDOWN.text(source);
 		} catch (Exception e){
 			if (LOG.isLoggable(TRACE)){
-				LOG.log(TRACE,"Failed to render markdown, input was: \n{0}",source);
+				LOG.log(TRACE,"Failed to render markdown, input was: \n{0}",source,e);
 			} else LOG.log(WARNING,"Failed to render markdown. Enable TRACE log level for details.");
 			return source;
 		}