An error occurred while processing the template. 
The following has evaluated to null or missing:
==> PageBackgroundImage  [in template "236#1975084#4517639" at line 1, column 6]

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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 PageBackgroundImage.getData()?? &...  [in template "236#1975084#4517639" at line 1, column 1]
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1<#if PageBackgroundImage.getData()?? && PageBackgroundImage.getData() != "">  
2<style> 
3body { 
4     background: url('${PageBackgroundImage.getData()}') top center no-repeat; 
5    background-size: cover; 
6    background-attachment: fixed; 
7} 
8</style> 
9 
10</#if> 
11 
12 
13<div class="container"> 
14    <div class="row justify-content-center"> 
15        <div class="col-8"> 
16            <div class="card"> 
17                <#if CardImage.getData()?? && CardImage.getData() != "">  
18                    <img alt="${CardImage.getAttribute("alt")}" class="card-img-top" data-fileentryid="${CardImage.getAttribute("fileEntryId")}" src="${CardImage.getData()}" />  
19                </#if> 
20                  <div class="card-body"> 
21                         
22                        <div class="card-body__header"> 
23                            <h1 class="card-title">${Title.getData()}</h1> 
24                        </div> 
25                        <#if PageBody.getData()?? && PageBody.getData() != ""> 
26                            ${PageBody.getData()} 
27                        </#if> 
28                  </div> 
29                   
30            </div> 
31        </div> 
32    </div>