table_tagx.doTag() has thrown a JspException

We found this prefix in 2 webpages.
MapChildren (2)Typical messages (2)TraceDetailed Map
  1. java.lang.NullPointerException
    1.   at com.github.dandelion.datatables.core.configuration.Configuration.applyConfiguration()
    2.   at com.github.dandelion.datatables.jsp.tag.TableTag.doStartTag()
    3.   at org.gvnix.datatables.tags.RooTableTag.doStartTag()
    4.   at org.apache.jsp.tag.web.datatables.table_tagx.doTag()
  2. javax.servlet.jsp.JspException
    1.   at org.apache.jsp.tag.web.datatables.table_tagx.doTag()
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MessageNumber of crashes
Request processing failed; nested exception is org.apache.tiles.impl.CannotRenderException: JSPException including path '/WEB-INF/views/vets/list.jspx'.1
An exception occurred processing JSP page /WEB-INF/layouts/default.jspx at line 23 20: <tiles:insertAttribute name="header" ignore="true" /> 21: <tiles:insertAttribute name="menu" ignore="true" /> 22: <div id="main">1
  1. java.lang.NullPointerException
    1.   at com.github.dandelion.datatables.core.configuration.Configuration.applyConfiguration()
    2.   at com.github.dandelion.datatables.jsp.tag.TableTag.doStartTag()
    3.   at org.gvnix.datatables.tags.RooTableTag.doStartTag()
    4.   at org.apache.jsp.tag.web.datatables.table_tagx.doTag()
  2. javax.servlet.jsp.JspException
    1.   at org.apache.jsp.tag.web.datatables.table_tagx.doTag()