java.lang.NullPointerException
	at org.parboiled.matchers.ProxyMatcher.isNodeSuppressed(ProxyMatcher.java:90)
	at org.parboiled.MatcherContext.<init>(MatcherContext.java:102)
	at org.parboiled.parserunners.AbstractParseRunner.createRootContext(AbstractParseRunner.java:90)
	at org.parboiled.parserunners.BasicParseRunner.run(BasicParseRunner.java:71)
	at org.parboiled.parserunners.ReportingParseRunner.runBasicMatch(ReportingParseRunner.java:86)
	at org.parboiled.parserunners.ReportingParseRunner.run(ReportingParseRunner.java:66)
	at org.parboiled.parserunners.AbstractParseRunner.run(AbstractParseRunner.java:81)
	at org.pegdown.Parser.parseToParsingResult(Parser.java:1284)
	at org.pegdown.Parser.parseInternal(Parser.java:1272)
	at org.pegdown.Parser.parse(Parser.java:76)
	at org.pegdown.PegDownProcessor.parseMarkdown(PegDownProcessor.java:88)
	at org.xwiki.rendering.internal.parser.markdown.MarkdownParser.parse(MarkdownParser.java:80)
	at com.xpn.xwiki.doc.XWikiDocument.parseContent(XWikiDocument.java:7642)