null Nemzetiségi rajzverseny 2018

Hiba jelentkezett a sablon feldolgozása során. 
The following has evaluated to null or missing:
==> title  [in template "10154#10192#2657665" at line 1, column 18]

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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: #assign count = title.getSiblings()?size  [in template "10154#10192#2657665" at line 1, column 1]
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1<#assign count = title.getSiblings()?size /> 
2<div id="${randomNamespace}ajbh-slider" class="ajbh-slider rounded-top-0 rounded"> 
3    <#if (count > 1)> 
4        <button type="button" aria-pressed="true" tabindex="0" class="prev ${randomNamespace}prev-icon"><i aria-hidden="true" class="icon-chevron-left"></i><span class="sr-only">${prev.getData()}</span></button> 
5        <button type="button" aria-pressed="true" tabindex="0" class="next ${randomNamespace}next-icon"><i aria-hidden="true" class="icon-chevron-right"></i><span class="sr-only">${next.getData()}</span></button> 
6    </#if> 
7    <ul class="ajbh-slider-items list-unstyled"> 
8 
9 
10    <#if title.getSiblings()?has_content> 
11        <#assign length = title.getSiblings()?size> 
12 
13        <#list length-1 .. 0 as i> 
14 
15            <#assign element = title.getSiblings()[i]> 
16 
17 
18            <li aria-hidden="${(i?index = 0)?then('false', 'true')}" class="ajbh-slider-item ${(i?index = 0)?then('current', '')}" data-id="${i?index}"> 
19                <div class="ajbh-slider-container"> 
20                    <a href="${element.linkToPage.getData()}" tabindex="${(i?index = 0)?then('0', '-1')}"> 
21                        <div class="ajbh-slider-image"> 
22                            <img src="${element.image.getData()}" alt="${element.image.alt.getData()}"> 
23                        </div> 
24                        <div class="ajbh-slider-details"> 
25                            <#if (count > 1)> 
26                                <div class="ajbh-slider-controller-media d-flex align-items-center px-1"> 
27                                    <button type="button" data-pause="${pause.getData()}" data-play="${play.getData()}"  class="f-white ${randomNamespace}media play-or-pause" tabindex="${(i?index = 0)?then('0', '-1')}"> 
28                                        ${getterUtil.getBoolean(autoplay.getData())?then('<i aria-hidden="true" class="px-2 py-1 icon-pause"></i>', '<i aria-hidden="true" class="px-2 py-1 icon-play"></i>')} 
29                                        <span class="sr-only">${getterUtil.getBoolean(autoplay.getData())?then(play.getData(), pause.getData())}</span> 
30                                    </button> 
31                                    <div class="ajbh-slider-controller-count pr-2 py-1 f-white"> 
32                                        <span>1</span>/${count} 
33                                    </div> 
34                                </div> 
35                            </#if> 
36 
37                            <div class="position-relative overflow-hidden"> 
38                                <#if validator.isNotNull(element.getData())> 
39                                <h2 class="f-size-24 f-white">${element.getData()}</h2> 
40                                </#if> 
41                            </div> 
42                        </div> 
43                    </a> 
44                </div> 
45            </li> 
46    	</#list> 
47    </#if> 
48    </ul> 
49</div> 
50 
51<script> 
52    ajbhSlider.app( 
53    (config = { 
54        namespace: "${randomNamespace}", 
55        interval: ${interval.getData()}, 
56        duration: ${duration.getData()}, 
57        autoplay: ${getterUtil.getBoolean(autoplay.getData())?c} 
58    }) 
59    ); 
60</script>