No Jira issue. When a person has no webpages, the group_concat in the query resulted in a non-empty result set: one that had no values but was nonetheless not empty. Added a check to see if the node was null.

src/edu/cornell/mannlib/vitro/webapp/edit/n3editing/configuration/generators/ManageWebpagesForIndividualGenerator.java

@@ -118,7 +118,7 @@ public class ManageWebpagesForIndividualGenerator extends BaseEditConfigurationG
             while (results.hasNext()) {
                 QuerySolution soln = results.nextSolution();
                 RDFNode node = soln.get("link");
-                if (node.isURIResource()) {
+                if (node != null && node.isURIResource()) {
                     webpages.add(QueryUtils.querySolutionToStringValueMap(soln));        
                 }
             }