An error occurred while processing the template. 
The following has evaluated to null or missing:
==> author.classPK  [in template "starin-cms-theme_SERVLET_CONTEXT_/templates/wcm/generic_article.ftl" at line 76, column 97]

----
Tip: It's the step after the last dot that caused this error, not those before it.
----
Tip: If the failing expression is known to be legally refer to something that's sometimes null or missing, either specify a default value like myOptionalVar!myDefault, or use <#if myOptionalVar??>when-present<#else>when-missing</#if>. (These only cover the last step of the expression; to cover the whole expression, use parenthesis: (myOptionalVar.foo)!myDefault, (myOptionalVar.foo)??
----

----
FTL stack trace ("~" means nesting-related):
	- Failed at: #assign authorEntry = assetEntryLocal...  [in template "starin-cms-theme_SERVLET_CONTEXT_/templates/wcm/generic_article.ftl" at line 76, column 25]
	- Reached through: #include "/starin-cms-theme_SERVLET_C...  [in template "20099#20135#34172" at line 1, column 1]
----
1<#include "/starin-cms-theme_SERVLET_CONTEXT_/templates/wcm/generic_article.ftl" />