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java.lang.NullPointerException: 	at com.thortech.xl.webclient.actions.ApprovalsAction.approveDenyTasks(Unknown Source)	at com.thortech.xl.webclient.actions.ApprovalsAction.confirmApprove(Unknown Source)	at com.OIM.webclient.actions.ApprovalsAction.confirmApprove(ApprovalsAction.java:170)	at sun.reflect.GeneratedMethodAccessor1055.invoke(Unknown Source)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)	at java.lang.reflect.Method.invoke(Method.java:618)	at org.apache.struts.actions.DispatchAction.dispatchMethod(DispatchAction.java:280)	at com.thortech.xl.webclient.actions.tcLookupDispatchAction.execute(Unknown Source)	at com.thortech.xl.webclient.actions.tcActionBase.execute(Unknown Source)	at com.thortech.xl.webclient.actions.tcAction.execute(Unknown Source)	at com.OIM.webclient.actions.ApprovalsAction.execute(ApprovalsAction.java:79)	at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:484)	at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:274)	at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1482)	at org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:525)	at javax.servlet.http.HttpServlet.service(HttpServlet.java:763)	at javax.servlet.http.HttpServlet.service(HttpServlet.java:856)	at com.ibm.ws.webcontainer.servlet.ServletWrapper.service(ServletWrapper.java:1146)	at com.ibm.ws.webcontainer.servlet.ServletWrapper.service(ServletWrapper.java:1087)	at com.ibm.ws.webcontainer.filter.WebAppFilterChain.doFilter(WebAppFilterChain.java:145)	at com.thortech.xl.webclient.security.SecurityFilter.doFilter(Unknown Source)	at com.ibm.ws.webcontainer.filter.FilterInstanceWrapper.doFilter(FilterInstanceWrapper.java:190)	at com.ibm.ws.webcontainer.filter.WebAppFilterChain.doFilter(WebAppFilterChain.java:130)	at com.ibm.ws.webcontainer.filter.WebAppFilterChain._doFilter(WebAppFilterChain.java:87)	at com.ibm.ws.webcontainer.filter.WebAppFilterManager.doFilter(WebAppFilterManager.java:848)	at com.ibm.ws.webcontainer.filter.WebAppFilterManager.doFilter(WebAppFilterManager.java:691)	at com.ibm.ws.webcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:588)	at com.ibm.ws.wswebcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:525)	at com.ibm.ws.webcontainer.servlet.CacheServletWrapper.handleRequest(CacheServletWrapper.java:90)	at com.ibm.ws.webcontainer.WebContainer.handleRequest(WebContainer.java:764)	at com.ibm.ws.wswebcontainer.WebContainer.handleRequest(WebContainer.java:1478)	at com.ibm.ws.webcontainer.channel.WCChannelLink.ready(WCChannelLink.java:133)	at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.handleDiscrimination(HttpInboundLink.java:450)	at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.handleNewRequest(HttpInboundLink.java:508)	at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.processRequest(HttpInboundLink.java:296)	at com.ibm.ws.http.channel.inbound.impl.HttpICLReadCallback.complete(HttpICLReadCallback.java:102)	at com.ibm.ws.tcp.channel.impl.AioReadCompletionListener.futureCompleted(AioReadCompletionListener.java:165)	at com.ibm.io.async.AbstractAsyncFuture.invokeCallback(AbstractAsyncFuture.java:217)	at com.ibm.io.async.AsyncChannelFuture.fireCompletionActions(AsyncChannelFuture.java:161)	at com.ibm.io.async.AsyncFuture.completed(AsyncFuture.java:136)	at com.ibm.io.async.ResultHandler.complete(ResultHandler.java:196)	at com.ibm.io.async.ResultHandler.runEventProcessingLoop(ResultHandler.java:751)	at com.ibm.io.async.ResultHandler$2.run(ResultHandler.java:881)	at com.ibm.ws.util.ThreadPool$Worker.run(ThreadPool.java:1497)