Why Extension Point org.eclipse.birt.core.FactoryService is not found?

[philip6543]

During application server startup, constructor of
org.eclipse.birt.report.engine.api.impl.ReportEngine$EngineExtensionManager
calls following method that returns a NULL pointer to extensionPoint variable:

• IExtensionPoint extensionPoint = registry
  .getExtensionPoint( "org.eclipse.birt.core.FactoryService" );

I am stumped why above extension point is not found when Process Explorer shows following jar is loaded in JVM?

• WEB-INF\platform\plugins\org.eclipse.birt.core_4.8.0.v201806261756.jar

• plugin.xml
  

•     <extension-point id="FactoryService" name="FactoryService" schema="schema/FactoryService.exsd"/>
  

Please see below null pointer exception for next line of code:

                             java.lang.NullPointerException
    at org.eclipse.birt.report.engine.api.impl.ReportEngine$EngineExtensionManager.<init>(ReportEngine.java:823)
    at org.eclipse.birt.report.engine.api.impl.ReportEngine.<init>(ReportEngine.java:111)
    at org.eclipse.birt.report.engine.api.impl.ReportEngineFactory$1.run(ReportEngineFactory.java:18)
    at org.eclipse.birt.report.engine.api.impl.ReportEngineFactory$1.run(ReportEngineFactory.java:1)
    at java.security.AccessController.doPrivileged(AccessController.java:678)
    at org.eclipse.birt.report.engine.api.impl.ReportEngineFactory.createReportEngine(ReportEngineFactory.java:16)
    at org.eclipse.birt.report.service.ReportEngineService.setEngineContext(ReportEngineService.java:344)
    at org.eclipse.birt.report.service.BirtViewerReportService.setContext(BirtViewerReportService.java:1023)
    at org.eclipse.birt.report.listener.ViewerServletContextListener.contextInitialized(ViewerServletContextListener.java:62)