DefaultJMXBeanRegistration warning when creating/modifying/deleting a wiki template

2017-12-13 09:40:12,072 [http://127.0.0.1:8080/xwiki/bin/get/XWiki/DefaultSkin] WARN  m.i.DefaultJMXBeanRegistration - Failed to unregister resource with name [type=Velocity,domain=Engines,name=xwiki:XWiki.DefaultSkin^XWiki.XWikiSkinFileOverrideClass[0].path]. Reason = [MalformedObjectNameException: Invalid character ':' in value part of property]