The following has evaluated to null or missing:
==> thisExcursionLengthString  [in template "2060078" at line 868, column 112]

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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: ${thisExcursionLengthString}  [in template "2060078" at line 868, column 110]
	- Reached through: #include detailTemplate  [in template "20098#20124#1568450" at line 6, column 1]
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1<!-- Tour - Excursion FTL --> 

2 

3<#assign envSettings = vtaLibrary.getEnvSettings()> 

4<#assign detailTemplate = "_TEMPLATE_CONTEXT_/20098/439822/34986/${envSettings.embedTourDetailUniId}"> 

5 

6<#include detailTemplate> 

7 

8<#if themeDisplay.isSignedIn() && envSettings.embedTourMasterDataUniId??> 

9    <#assign masterDataTemplate = "_TEMPLATE_CONTEXT_/20098/439822/34986/${envSettings.embedTourMasterDataUniId}"> 

10    <#include masterDataTemplate> 

11</#if>