Error when trying to view Approval request

Hi,

We are receiving this error often when approvers are clicking on the link to reject or recommend.

HTTP Status 500 -

--------------------------------------------------------------------------------

type Exception report

message

description The server encountered an internal error () that prevented it from fulfilling this request.

exception

java.lang.NullPointerException
com.adventnet.servicedesk.notification.util.NotificationFactory.formateDate(NotificationFactory.java:1010)
com.adventnet.servicedesk.helpdesk.util.NotificationUtil.getReplacedString(NotificationUtil.java:345)
com.adventnet.servicedesk.helpdesk.util.ApprovalUtil.updateApprovalDetails(ApprovalUtil.java:322)
org.apache.jsp.approval.ApproveRequest_jsp._jspService(ApproveRequest_jsp.java:196)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:94)
javax.servlet.http.HttpServlet.service(HttpServlet.java:810)
com.adventnet.servicedesk.filter.EncodingFilter.doFilter(EncodingFilter.java:92)
com.adventnet.authentication.ContextChangeDetector.doFilter(ContextChangeDetector.java:100)
org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:75)
note The full stack trace of the root cause is available in the Apache Tomcat/5.0.28 logs.

Thanks,

Greg