null Sinopses dos filmes da Mostra Unifor de Cinema

Um erro ocorreu enquanto processava o modelo.
The following has evaluated to null or missing:
==> settings.firstItemOpened  [in template "20116#20152#72119" at line 8, column 10]

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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 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: #if settings.firstItemOpened.getData(...  [in template "20116#20152#72119" at line 8, column 5]
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1<#if settings.title.getData() != ""> 
2  <h3 class="highlight-title text--center text--uppercase">${settings.title.getData()}</h3> 
3</#if> 
4 
5<div class="card card--shadow margin--bottom-2x"> 
6  <#list itens.getSiblings() as item> 
7 
8    <#if settings.firstItemOpened.getData() == "true" && item?is_first> 
9      <#assign openedClass = "show"> 
10      <#assign collapsedClass = ""> 
11    <#else> 
12      <#assign openedClass = ""> 
13      <#assign collapsedClass = "collapsed"> 
14    </#if> 
15     
16    <div class="accordion"> 
17      <h4 class="accordion__title"> 
18        <a class="accordion__trigger ${collapsedClass} text--uppercase" role="button" data-toggle="collapse" href="#item_${randomNamespace}_${item?counter}">${item.itemTitle.getData()}</a> 
19      </h4> 
20 
21      <div class="collapse ${openedClass}" id="item_${randomNamespace}_${item?counter}"> 
22        <div class="accordion__content"> 
23 
24          <#if item.itemWebContent.getData() != ""> 
25            <#assign article = item.itemWebContent.getData()?eval /> 
26            <@liferay_asset["asset-display"] 
27              className=article.className 
28              classPK=getterUtil.getLong(article.classPK, 0) 
29              template="full_content" 
30            /> 
31 
32          <#else> 
33            ${item.itemContent.getData()} 
34          </#if> 
35 
36        </div> 
37      </div> 
38    </div> 
39  </#list> 
40</div> 
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