The following has evaluated to null or missing:
==> BackgroundImage  [in template "1486249#1486283#ALASIVUN-PÄÄKUVA_TMPL-1.0.0" 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 BackgroundImage.getData()?? && Ba...  [in template "1486249#1486283#ALASIVUN-PÄÄKUVA_TMPL-1.0.0" at line 1, column 1]
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1<#if BackgroundImage.getData()?? && BackgroundImage.getData() != ""> 

2    <div style="background: url('${BackgroundImage.getData()}') 50% 100%" class="subPageHeroContainer"  role="img" aria-label="${BackgroundImage.getAttribute("alt")}"> 

3        <#if PageTitle.getData()?has_content> 

4        	<div class="subHeroTitleContainer"><h1 class="subheroHeader">${PageTitle.getData()}</h1></div> 

5        </#if> 

6    </div> 

7</#if>