The following has evaluated to null or missing:
==> articleService  [in template "560608#560649#803028" at line 7, column 107]

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Tip: If the failing expression is known to 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: ${articleService.getContentByClassPK(...  [in template "560608#560649#803028" at line 7, column 105]
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1<div class="container"> 

2                    <section class="section radius-20 bg-white p-5"> 

3                        <div class="title"> 

4                            <h3 class="text-title fs-lg">FAQ</h3> 

5                        </div> 

6                        <div class="accordion dl-accordion" id="accordionFAQ"> 

7													${articleService.getContentByClassPK(curEntry.classPK?number, "803042")} 

8                        </div> 

9                    </section> 

10                </div>