Untitled carouselStructure

Er trad een fout op tijdens de verwerking van de sjabloon.
The following has evaluated to null or missing:
==> image  [in template "44830#44856#290051" at line 1, column 6]

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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: #if image.getSiblings()?has_content  [in template "44830#44856#290051" at line 1, column 1]
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1<#if image.getSiblings()?has_content> 
2 
3    <section class="carousel-container"> 
4 
5        <div class="carousel slide" data-ride="carousel" id='carousel-<@portlet.namespace />'> 
6 
7            <ol class="carousel-indicators hidden-sm hidden-xs"> 
8 
9                <#list image.getSiblings() as cur_img> 
10 
11                   <li class="${(cur_img?counter == 1)?then('active', '')}" data-slide-to="${(cur_img?counter == 1)?then(0, (cur_img?counter - 1))}" data-target='carousel-<@portlet.namespace />'></li> 
12 
13                </#list> 
14 
15            </ol> 
16 
17            <div class="carousel-inner" role="listbox"> 
18 
19                <#list image.getSiblings() as cur_innerImage> 
20 
21                    <div class="${(cur_innerImage?counter == 1)?then('active', '')} item"> 
22 
23                        <div class="aspect-ratio aspect-ratio-custom aspect-ratio-middle"> 
24 
25                            <img alt="${cur_Imageay84.getAttribute("alt")}" data-fileentryid="${cur_Imageay84.getAttribute("fileEntryId")}" src="${cur_Imageay84.getData()}" /> 
26 
27                        </div> 
28 
29                    </div> 
30 
31                </#list> 
32 
33            </div> 
34 
35 
36            <a class="left carousel-control" href='#carousel-<@portlet.namespace />' role="button" data-slide="prev"> 
37 
38                <span class="glyphicon glyphicon-chevron-left" aria-hidden="true"></span> 
39 
40 
41                <span class="sr-only">Previous</span> 
42 
43            </a> 
44 
45 
46            <a class="right carousel-control" href='#carousel-<@portlet.namespace />' role="button" data-slide="next"> 
47 
48                <span class="glyphicon glyphicon-chevron-right" aria-hidden="true"></span> 
49 
50 
51                <span class="sr-only">Next</span> 
52 
53            </a> 
54 
55        </div> 
56 
57    </section> 
58 
59</#if>