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com.opensymphony.xwork2.XWorkException was replaced by org.apache.struts2.StrutsException.

Tag escape behaviour

After migrating to the latest Freemarker (which enables auto-escaping by default) you should top using ?html in your custom tags and freemarker based pages. Also when embedding one tag in another like in the example below:

<s:a href="%{...}">
  <img src="<s:url value='/images/icon_waste_sml.png'/>"/>
</s:a>

The inner tag will be automatically escaped, to avoid such behaviour set "escapeHtmlBody" attribute to "false" as below:

<s:a href="%{...}" escapeHtmlBody="false">
  <img src="<s:url value='/images/icon_waste_sml.png'/>"/>
</s:a>

It's related to

Temp/Work directory of ApplicationServer/ServletContainer

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