What do you in the logfile at the time it is happening?Also can you share details like java-version and other details you might have.

Looking at your bean on your HTL expressions, they don't match...you have .fPath and activeAttrand you have getFpath() and getActiveattr()  <p>fpath : ${navlist.fPath}</p> <p>activeAttr: ${navlist.activeAttr}</p>

Can you share your bean too?

Here my sample:package adobe.summit.lasvegas.core; import java.util.LinkedList;import java.util.List; import com.adobe.cq.sightly.WCMUsePojo; public class MiniNav extends WCMUsePojo {     private List<MiniNavBean> navList = new LinkedList<MiniNavBean>();     MiniNavBean miniNav;     public List<Mini...

Just tried your sample with a LinkedList, and works perfectly on my end.Share your sample that doesn't work, to make sure we don't hit basic typos for example.

Doesn't matter..

Can you upload the maven project so I can try this on an instance?

On the sightly syntax, you can also use the following:<div data-sly-use.mininav="com.components.MiniNav" data-sly-list.navlist="${mininav.navList}">No need for the global.jsp, and you can combine data-sly attributes within an element

In your sample I don't see any assignments to the List<> variable..private List<MiniNavBean> navList;

Can you compare it with the sample project (result branch). Always make sure that the uber-jar is mentioned as first dependency.Project: https://github.com/heervisscher/l318/blob/result/lasvegas/core/pom.xml