I have XWIKI 7.1.2 on UBUNTU 14.04.3 LTS, Tomcat7 and MySQL from Ubuntu
Distribution.
XWIKI WAR Install.
I am using a subwiki.
The following line
{{parentschildrenlivetable space="An existing Space"/}}
Result in this message in catalina.out
2015-10-14 18:04:35,664
[http://wiki/xwiki/wiki/icwiki/edit/XWiki/SpaceParentsChildrenService?language=en&editor=inline]
ERROR o.x.v.i.DefaultVelocityEngine - Left side ($returnedItems) of '<'
operation has null value at 37:icwiki:XWiki.SpaceParentsChildrenService[line
250, column 37]
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