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javax.servlet.jsp.JspException - javax.el.ELException: Problems calling function 'nav:review'

Caused by: javax.servlet.jsp.JspException: javax.el.ELException: Problems calling function 'nav:review'
        at org.apache.jsp.tag.web.cru.activity.reviewCommentItem_tag.doTag(reviewCommentItem_tag.java:184)
        at org.apache.jsp.tag.web.cru.activity.articleList_tag._jspx_meth_activity_reviewCommentItem_0(articleList_tag.java:1503)
        at org.apache.jsp.tag.web.cru.activity.articleList_tag._jspx_meth_c_when_8(articleList_tag.java:1472)
        at org.apache.jsp.tag.web.cru.activity.articleList_tag._jspx_meth_c_choose_1(articleList_tag.java:827)
        at org.apache.jsp.tag.web.cru.activity.articleList_tag._jspx_meth_c_forEach_0(articleList_tag.java:536)
        at org.apache.jsp.tag.web.cru.activity.articleList_tag.doTag(articleList_tag.java:246)
        at org.apache.jsp.tag.web.cru.activity.activityStream_tag._jspx_meth_activity_articleList_0(activityStream_tag.java:284)
        at org.apache.jsp.tag.web.cru.activity.activityStream_tag.doTag(activityStream_tag.java:219)
        at org.apache.jsp.WEB_002dINF.jsp.changelogdir_jsp._jspx_meth_activity_activityStream_0(changelogdir_jsp.java:1553)
        at org.apache.jsp.WEB_002dINF.jsp.changelogdir_jsp.access$3300(changelogdir_jsp.java:7)
        at org.apache.jsp.WEB_002dINF.jsp.changelogdir_jsp$changelogdir_jspHelper.invoke25(changelogdir_jsp.java:1876)
        at org.apache.jsp.WEB_002dINF.jsp.changelogdir_jsp$changelogdir_jspHelper.invoke(changelogdir_jsp.java:1979)
        at org.apache.jsp.tag.web.cru.threePanelPageContentWithAUIHeader_tag.doTag(threePanelPageContentWithAUIHeader_tag.java:680)
        at org.apache.jsp.WEB_002dINF.jsp.changelogdir_jsp._jspx_meth_rend_threePanelPageContentWithAUIHeader_0(changelogdir_jsp.java:448)
        at org.apache.jsp.WEB_002dINF.jsp.changelogdir_jsp._jspService(changelogdir_jsp.java:227)
        ... 231 more
Caused by: javax.el.ELException: Problems calling function 'nav:review'
        at com.sun.el.parser.AstFunction.getValue(AstFunction.java:136)
        at com.sun.el.parser.AstChoice.getValue(AstChoice.java:66)
        at com.sun.el.ValueExpressionImpl.getValue(ValueExpressionImpl.java:224)
        at org.apache.jasper.runtime.PageContextImpl.evaluateExpression(PageContextImpl.java:1009)
        at org.apache.jsp.tag.web.cru.activity.reviewCommentItem_tag._jspx_meth_c_set_2(reviewCommentItem_tag.java:300)
        at org.apache.jsp.tag.web.cru.activity.reviewCommentItem_tag._jspx_meth_c_if_1(reviewCommentItem_tag.java:265)
        at org.apache.jsp.tag.web.cru.activity.reviewCommentItem_tag.doTag(reviewCommentItem_tag.java:172)
        ... 245 more