Unexpected runtime error

The runtime has encountered an unexpected error.

Error source

Page Name:/sessionsbytrack.xsp
Control Id: approveButton

Exception

Error while executing JavaScript computed expression
Script interpreter error, line=1, col=24: 'sessions.getDocument()' is null

JavaScript code

   1: sessions.getDocument().getItemValueString("Status") != "Approved" && hasRole("[Admin]")

► ▼ Stack Trace

com.ibm.xsp.exception.EvaluationExceptionEx: Error while executing JavaScript computed expression
    com.ibm.xsp.binding.javascript.JavaScriptValueBinding.getValue(JavaScriptValueBinding.java:132)
    javax.faces.component.UIComponentBase.isRendered(UIComponentBase.java:451)
    javax.faces.component.UIComponentBase.fillShadowedFlags(UIComponentBase.java:880)
    javax.faces.component.UIComponentBase.encodeBegin(UIComponentBase.java:948)
    com.ibm.xsp.component.UICommandEx2.encodeBegin(UICommandEx2.java:395)
    com.ibm.xsp.util.FacesUtil.renderComponent(FacesUtil.java:793)
    com.ibm.xsp.util.FacesUtil.renderChildren(FacesUtil.java:824)
    com.ibm.xsp.renderkit.html_extended.HtmlBasicRenderer.encodeChildren(HtmlBasicRenderer.java:159)
    com.ibm.xsp.renderkit.ReadOnlyAdapterRenderer.encodeChildren(ReadOnlyAdapterRenderer.java:135)
    javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:979)
    com.ibm.xsp.util.FacesUtil.renderComponent(FacesUtil.java:795)
    com.ibm.xsp.util.FacesUtil.renderComponent(FacesUtil.java:804)
    com.ibm.xsp.util.FacesUtil.renderComponent(FacesUtil.java:804)
    com.ibm.xsp.util.FacesUtil.renderComponent(FacesUtil.java:804)
    com.ibm.xsp.util.FacesUtil.renderComponent(FacesUtil.java:804)
    com.ibm.xsp.util.FacesUtil.renderChildren(FacesUtil.java:824)
    com.ibm.xsp.renderkit.html_extended.IteratorRenderer.encodeRows(IteratorRenderer.java:67)
    com.ibm.xsp.renderkit.html_extended.IteratorRenderer.encodeChildren(IteratorRenderer.java:55)
    com.ibm.xsp.renderkit.ReadOnlyAdapterRenderer.encodeChildren(ReadOnlyAdapterRenderer.java:135)
    javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:979)
    com.ibm.xsp.component.UIDataIterator.encodeChildren(UIDataIterator.java:694)
    com.ibm.xsp.util.FacesUtil.renderComponent(FacesUtil.java:795)
    com.ibm.xsp.util.FacesUtil.renderComponent(FacesUtil.java:804)
    com.ibm.xsp.util.FacesUtil.renderComponent(FacesUtil.java:804)
    com.ibm.xsp.util.FacesUtil.renderComponent(FacesUtil.java:804)
    com.ibm.xsp.util.FacesUtil.renderComponent(FacesUtil.java:804)
    com.ibm.xsp.util.FacesUtil.renderComponent(FacesUtil.java:804)
    com.ibm.xsp.util.FacesUtil.renderComponent(FacesUtil.java:804)
    com.ibm.xsp.util.FacesUtil.renderComponent(FacesUtil.java:804)
    com.ibm.xsp.util.FacesUtil.renderComponent(FacesUtil.java:804)
    com.ibm.xsp.util.FacesUtil.renderComponent(FacesUtil.java:804)
    com.ibm.xsp.util.FacesUtil.renderComponent(FacesUtil.java:804)
    com.ibm.xsp.util.FacesUtil.renderComponent(FacesUtil.java:804)
    com.ibm.xsp.component.UIViewRootEx._renderView(UIViewRootEx.java:1272)
    com.ibm.xsp.component.UIViewRootEx.renderView(UIViewRootEx.java:1210)
    com.ibm.xsp.application.ViewHandlerExImpl.doRender(ViewHandlerExImpl.java:635)
    com.ibm.xsp.application.ViewHandlerExImpl._renderView(ViewHandlerExImpl.java:320)
    com.ibm.xsp.application.ViewHandlerExImpl.renderView(ViewHandlerExImpl.java:355)
    com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:103)
    com.sun.faces.lifecycle.LifecycleImpl.phase(LifecycleImpl.java:210)
    com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:120)
    com.ibm.xsp.controller.FacesControllerImpl.render(FacesControllerImpl.java:264)
    com.ibm.xsp.webapp.FacesServlet.serviceView(FacesServlet.java:219)
    com.ibm.xsp.webapp.FacesServletEx.serviceView(FacesServletEx.java:193)
    com.ibm.xsp.webapp.FacesServlet.service(FacesServlet.java:154)
    com.ibm.xsp.webapp.FacesServletEx.service(FacesServletEx.java:137)
    com.ibm.xsp.webapp.DesignerFacesServlet.service(DesignerFacesServlet.java:86)
    com.ibm.designer.runtime.domino.adapter.ComponentModule.invokeServlet(ComponentModule.java:538)
    com.ibm.domino.xsp.module.nsf.NSFComponentModule.invokeServlet(NSFComponentModule.java:1140)
    com.ibm.designer.runtime.domino.adapter.ComponentModule$AdapterInvoker.invokeServlet(ComponentModule.java:803)
    com.ibm.designer.runtime.domino.adapter.ComponentModule$ServletInvoker.doService(ComponentModule.java:758)
    com.ibm.designer.runtime.domino.adapter.ComponentModule.doService(ComponentModule.java:527)
    com.ibm.domino.xsp.module.nsf.NSFComponentModule.doService(NSFComponentModule.java:1124)
    com.ibm.domino.xsp.module.nsf.NSFService.doServiceInternal(NSFService.java:513)
    com.ibm.domino.xsp.module.nsf.NSFService.doService(NSFService.java:342)
    com.ibm.designer.runtime.domino.adapter.LCDEnvironment.doService(LCDEnvironment.java:304)
    com.ibm.designer.runtime.domino.adapter.LCDEnvironment.service(LCDEnvironment.java:261)
    com.ibm.domino.xsp.bridge.http.engine.XspCmdManager.service(XspCmdManager.java:291)
com.ibm.jscript.InterpretException: Script interpreter error, line=1, col=24: 'sessions.getDocument()' is null
    java.lang.Throwable.(Throwable.java:67)
    com.ibm.commons.util.AbstractException.(AbstractException.java:51)
    com.ibm.jscript.JavaScriptException.(JavaScriptException.java:37)
    com.ibm.jscript.InterpretException.(InterpretException.java:123)
    com.ibm.jscript.ASTTree.ASTMember.interpret(ASTMember.java:97)
    com.ibm.jscript.ASTTree.ASTCall.interpret(ASTCall.java:88)
    com.ibm.jscript.ASTTree.binaryop.ASTBinaryDefaultOp.interpret(ASTBinaryDefaultOp.java:49)
    com.ibm.jscript.ASTTree.binaryop.ASTBinaryRelAnd.interpret(ASTBinaryRelAnd.java:63)
    com.ibm.jscript.ASTTree.ASTProgram.interpret(ASTProgram.java:119)
    com.ibm.jscript.ASTTree.ASTProgram.interpretEx(ASTProgram.java:139)
    com.ibm.jscript.JSExpression._interpretExpression(JSExpression.java:435)
    com.ibm.jscript.JSExpression.access$1(JSExpression.java:424)
    com.ibm.jscript.JSExpression$2.run(JSExpression.java:414)
    java.security.AccessController.doPrivileged(AccessController.java:284)
    com.ibm.jscript.JSExpression.interpretExpression(JSExpression.java:410)
    com.ibm.jscript.JSExpression.evaluateValue(JSExpression.java:251)
    com.ibm.jscript.JSExpression.evaluateValue(JSExpression.java:234)
    com.ibm.xsp.javascript.JavaScriptInterpreter.interpret(JavaScriptInterpreter.java:220)
    com.ibm.xsp.javascript.JavaScriptInterpreter.interpret(JavaScriptInterpreter.java:192)
    com.ibm.xsp.binding.javascript.JavaScriptValueBinding.getValue(JavaScriptValueBinding.java:78)
    javax.faces.component.UIComponentBase.isRendered(UIComponentBase.java:451)
    javax.faces.component.UIComponentBase.fillShadowedFlags(UIComponentBase.java:880)
    javax.faces.component.UIComponentBase.encodeBegin(UIComponentBase.java:948)
    com.ibm.xsp.component.UICommandEx2.encodeBegin(UICommandEx2.java:395)
    com.ibm.xsp.util.FacesUtil.renderComponent(FacesUtil.java:793)
    com.ibm.xsp.util.FacesUtil.renderChildren(FacesUtil.java:824)
    com.ibm.xsp.renderkit.html_extended.HtmlBasicRenderer.encodeChildren(HtmlBasicRenderer.java:159)
    com.ibm.xsp.renderkit.ReadOnlyAdapterRenderer.encodeChildren(ReadOnlyAdapterRenderer.java:135)
    javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:979)
    com.ibm.xsp.util.FacesUtil.renderComponent(FacesUtil.java:795)
    com.ibm.xsp.util.FacesUtil.renderComponent(FacesUtil.java:804)
    com.ibm.xsp.util.FacesUtil.renderComponent(FacesUtil.java:804)
    com.ibm.xsp.util.FacesUtil.renderComponent(FacesUtil.java:804)
    com.ibm.xsp.util.FacesUtil.renderComponent(FacesUtil.java:804)
    com.ibm.xsp.util.FacesUtil.renderChildren(FacesUtil.java:824)
    com.ibm.xsp.renderkit.html_extended.IteratorRenderer.encodeRows(IteratorRenderer.java:67)
    com.ibm.xsp.renderkit.html_extended.IteratorRenderer.encodeChildren(IteratorRenderer.java:55)
    com.ibm.xsp.renderkit.ReadOnlyAdapterRenderer.encodeChildren(ReadOnlyAdapterRenderer.java:135)
    javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:979)
    com.ibm.xsp.component.UIDataIterator.encodeChildren(UIDataIterator.java:694)
    com.ibm.xsp.util.FacesUtil.renderComponent(FacesUtil.java:795)
    com.ibm.xsp.util.FacesUtil.renderComponent(FacesUtil.java:804)
    com.ibm.xsp.util.FacesUtil.renderComponent(FacesUtil.java:804)
    com.ibm.xsp.util.FacesUtil.renderComponent(FacesUtil.java:804)
    com.ibm.xsp.util.FacesUtil.renderComponent(FacesUtil.java:804)
    com.ibm.xsp.util.FacesUtil.renderComponent(FacesUtil.java:804)
    com.ibm.xsp.util.FacesUtil.renderComponent(FacesUtil.java:804)
    com.ibm.xsp.util.FacesUtil.renderComponent(FacesUtil.java:804)
    com.ibm.xsp.util.FacesUtil.renderComponent(FacesUtil.java:804)
    com.ibm.xsp.util.FacesUtil.renderComponent(FacesUtil.java:804)
    com.ibm.xsp.util.FacesUtil.renderComponent(FacesUtil.java:804)
    com.ibm.xsp.util.FacesUtil.renderComponent(FacesUtil.java:804)
    com.ibm.xsp.component.UIViewRootEx._renderView(UIViewRootEx.java:1272)
    com.ibm.xsp.component.UIViewRootEx.renderView(UIViewRootEx.java:1210)
    com.ibm.xsp.application.ViewHandlerExImpl.doRender(ViewHandlerExImpl.java:635)
    com.ibm.xsp.application.ViewHandlerExImpl._renderView(ViewHandlerExImpl.java:320)
    com.ibm.xsp.application.ViewHandlerExImpl.renderView(ViewHandlerExImpl.java:355)
    com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:103)
    com.sun.faces.lifecycle.LifecycleImpl.phase(LifecycleImpl.java:210)
    com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:120)
    com.ibm.xsp.controller.FacesControllerImpl.render(FacesControllerImpl.java:264)
    com.ibm.xsp.webapp.FacesServlet.serviceView(FacesServlet.java:219)
    com.ibm.xsp.webapp.FacesServletEx.serviceView(FacesServletEx.java:193)
    com.ibm.xsp.webapp.FacesServlet.service(FacesServlet.java:154)
    com.ibm.xsp.webapp.FacesServletEx.service(FacesServletEx.java:137)
    com.ibm.xsp.webapp.DesignerFacesServlet.service(DesignerFacesServlet.java:86)
    com.ibm.designer.runtime.domino.adapter.ComponentModule.invokeServlet(ComponentModule.java:538)
    com.ibm.domino.xsp.module.nsf.NSFComponentModule.invokeServlet(NSFComponentModule.java:1140)
    com.ibm.designer.runtime.domino.adapter.ComponentModule$AdapterInvoker.invokeServlet(ComponentModule.java:803)
    com.ibm.designer.runtime.domino.adapter.ComponentModule$ServletInvoker.doService(ComponentModule.java:758)
    com.ibm.designer.runtime.domino.adapter.ComponentModule.doService(ComponentModule.java:527)
    com.ibm.domino.xsp.module.nsf.NSFComponentModule.doService(NSFComponentModule.java:1124)
    com.ibm.domino.xsp.module.nsf.NSFService.doServiceInternal(NSFService.java:513)
    com.ibm.domino.xsp.module.nsf.NSFService.doService(NSFService.java:342)
    com.ibm.designer.runtime.domino.adapter.LCDEnvironment.doService(LCDEnvironment.java:304)
    com.ibm.designer.runtime.domino.adapter.LCDEnvironment.service(LCDEnvironment.java:261)
    com.ibm.domino.xsp.bridge.http.engine.XspCmdManager.service(XspCmdManager.java:291)