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/adt/category-nav-results-view.ftl" at line 56, column 105]

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Tip: It's the step after the last dot that caused this error, not those before it.
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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)??
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FTL stack trace ("~" means nesting-related):
	- Failed at: #assign authorEntry = assetEntryLocal...  [in template "starin-cms-theme_SERVLET_CONTEXT_/templates/adt/category-nav-results-view.ftl" at line 56, column 33]
	- Reached through: #include "/starin-cms-theme_SERVLET_C...  [in template "20099#20135#34250" at line 1, column 1]
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1<#include "/starin-cms-theme_SERVLET_CONTEXT_/templates/adt/category-nav-results-view.ftl" /> 
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