Exception occur while generating the report

Migrateduser

<p>org.eclipse.birt.report.engine.api.EngineException: Cannot create data engine.<br>
        at org.eclipse.birt.report.engine.executor.ExecutionContext.openDataEngine(ExecutionContext.java:896)<br>
        at org.eclipse.birt.report.engine.executor.ExecutionContext.getDataEngine(ExecutionContext.java:908)<br>
        at org.eclipse.birt.report.engine.executor.ReportExecutor.execute(ReportExecutor.java:122)<br>
        at org.eclipse.birt.report.engine.internal.executor.wrap.WrappedReportExecutor.execute(WrappedReportExecutor.java:60)<br>
        at org.eclipse.birt.report.engine.internal.executor.dup.SuppressDuplciateReportExecutor.execute(SuppressDuplciateReportExecutor.java:42)<br>
        at org.eclipse.birt.report.engine.internal.executor.wrap.WrappedReportExecutor.execute(WrappedReportExecutor.java:60)<br>
        at org.eclipse.birt.report.engine.internal.executor.l18n.LocalizedReportExecutor.execute(LocalizedReportExecutor.java:61)<br>
        at org.eclipse.birt.report.engine.api.impl.RunAndRenderTask.doRun(RunAndRenderTask.java:179)<br>
        at org.eclipse.birt.report.engine.api.impl.RunAndRenderTask.run(RunAndRenderTask.java:77)<br>
        at com.cdc.fms.server.reports.ReportFactoryBean.generateBirtReport(ReportFactoryBean.java:211)<br>
        at com.cdc.fms.server.reports.ReportFactoryBean.generateReport(ReportFactoryBean.java:359)<br>
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)<br>
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:60)<br>
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:37)<br>
        at java.lang.reflect.Method.invoke(Method.java:611)<br>
        at com.bea.core.repackaged.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:310)<br>
        at com.bea.core.repackaged.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:182)<br>
        at com.bea.core.repackaged.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:149)<br>
        at com.bea.core.repackaged.springframework.aop.support.DelegatingIntroductionInterceptor.doProceed(DelegatingIntroductionInterceptor.java:131)<br>
        at com.bea.core.repackaged.springframework.aop.support.DelegatingIntroductionInterceptor.invoke(DelegatingIntroductionInterceptor.java:119)<br>
        at com.bea.core.repackaged.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)<br>
        at com.bea.core.repackaged.springframework.jee.spi.MethodInvocationVisitorImpl.visit(MethodInvocationVisitorImpl.java:37)<br>
        at weblogic.ejb.container.injection.EnvironmentInterceptorCallbackImpl.callback(EnvironmentInterceptorCallbackImpl.java:54)<br>
        at com.bea.core.repackaged.springframework.jee.spi.EnvironmentInterceptor.invoke(EnvironmentInterceptor.java:50)<br>
        at com.bea.core.repackaged.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)<br>
        at com.bea.core.repackaged.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:89)<br>
        at com.bea.core.repackaged.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)<br>
        at com.bea.core.repackaged.springframework.aop.support.DelegatingIntroductionInterceptor.doProceed(DelegatingIntroductionInterceptor.java:131)<br>
        at com.bea.core.repackaged.springframework.aop.support.DelegatingIntroductionInterceptor.invoke(DelegatingIntroductionInterceptor.java:119)<br>
        at com.bea.core.repackaged.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)<br>
        at com.bea.core.repackaged.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204)<br>
        at com.sun.proxy.$Proxy92.generateReport(Unknown Source)<br>
        at com.cdc.fms.server.reports.ReportFactory_m03j4g_EOImpl.generateReport(ReportFactory_m03j4g_EOImpl.java:58)<br>
        at com.cdc.fms.server.reports.ReportFactory_m03j4g_EOImpl_WLSkel.invoke(Unknown Source)<br>
        at weblogic.rmi.internal.BasicServerRef.invoke(BasicServerRef.java:589)<br>
        at weblogic.rmi.internal.BasicServerRef$1.run(BasicServerRef.java:477)<br>
        at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:363)<br>
        at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:147)<br>
        at weblogic.rmi.internal.BasicServerRef.handleRequest(BasicServerRef.java:473)<br>
        at weblogic.rmi.internal.wls.WLSExecuteRequest.run(WLSExecuteRequest.java:118)<br>
        at weblogic.work.ExecuteThread.execute(ExecuteThread.java:201)<br>
        at weblogic.work.ExecuteThread.run(ExecuteThread.java:173)<br>
Caused by: org.eclipse.birt.core.exception.CoreException: No such script extension : javascript.<br>
        at org.eclipse.birt.core.script.ScriptContext.getScriptEngine(ScriptContext.java:227)<br>
        at org.eclipse.birt.report.engine.adapter.ModelDteApiAdapter.<init>(ModelDteApiAdapter.java:178)<br>
        at org.eclipse.birt.report.engine.data.dte.AbstractDataEngine.<init>(AbstractDataEngine.java:109)<br>
        at org.eclipse.birt.report.engine.data.dte.DteDataEngine.<init>(DteDataEngine.java:85)<br>
        at org.eclipse.birt.report.engine.data.DataEngineFactory.createDataEngine(DataEngineFactory.java:115)<br>
        at org.eclipse.birt.report.engine.executor.ExecutionContext.openDataEngine(ExecutionContext.java:891)<br>
        ... 41 more<br>
 </p>