Se ha producido un error al procesar la plantilla.
The following has evaluated to null or missing:
==> dato.categoria  [in template "33501#33537#4750868" at line 22, column 129]

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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 dato.categoria.getData() == categ...  [in template "33501#33537#4750868" at line 22, column 124]
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1<#assign i = 1> 
2<#assign nowYear = .now?string('yyyy')> 
3<#if (request.getParameter("nowYear")?has_content)> 
4    <#assign nowYear = request.getParameter("nowYear")> 
5</#if> 
6<#assign categoria = ""> 
7<#if (request.getParameter("categoria")?has_content)> 
8    <#assign categoria = request.getParameter("categoria")> 
9</#if> 
10 
11<section class="calen-estd pt-15"> 
12    <div class="container-corp"> 
13        <div class="row"> 
14            <div class="col-lg-12"> 
15                <div class="container-corp"> 
16                    <ul class="nav nav-tabs nav-tabs-corp-dark nav-same-width-item nav-tabs-mobile" id="myTab2" role="tablist"> 
17                        <#if acordeon.getSiblings()?has_content> 
18                            <#list acordeon.getSiblings() as dato> 
19                                <li class="nav-item"> 
20                                    <#assign colorDotClass = dato.circuloFiltroColor.getData()> 
21                                    <span class="nav-item-circle ${colorDotClass}"></span> 
22                                    <a aria-controls="calendario-${i}" aria-selected="false" class="nav-link acordeon-link <#if dato.categoria.getData() == categoria> active </#if>" data-toggle="tab" href="#calendario-${i}" data-categoria="${dato.categoria.getData()}" id="calendario${i}-tab1" role="tab">${dato.tituloAcordeon.getData()}</a> 
23                                </li> 
24                                <#assign i = i + 1> 
25                            </#list> 
26                        </#if> 
27                    </ul> 
28                    <div class="calen-estd-filtro"> 
29                        <p class="f-opensans-bold mb-0 c-blue-2 mr-4">Selecciona el año</p> 
30                        <div class="width-10"> 
31                            <select class="form-control control-corp" name="selectorAnio" id="selectorAnio"> 
32                                <option value="2025" <#if nowYear == "2025"> selected </#if>>2025</option> 
33                                <option value="2024" <#if nowYear == "2024"> selected </#if>>2024</option> 
34                            </select> 
35                        </div> 
36                    </div> 
37                </div> 
38            </div> 
39        </div> 
40    </div> 
41</section>