java.lang.NoClassDefFoundError: com/sun/management/internal/GarbageCollectorExtImpl
   at sun.management.MemoryImpl.getMemoryManagers0(MemoryImpl.java:0)
   at sun.management.MemoryImpl.getMemoryManagers(MemoryImpl.java:98)
   at sun.management.ManagementFactoryHelper.getGarbageCollectorMXBeans(ManagementFactoryHelper.java:133)
   at java.lang.management.DefaultPlatformMBeanProvider$4.nameToMBeanMap(DefaultPlatformMBeanProvider.java:185)
   at sun.management.spi.PlatformMBeanProvider$PlatformComponent.getMBeans(PlatformMBeanProvider.java:195)
   at java.lang.management.ManagementFactory.lambda$getPlatformMXBeans$3(ManagementFactory.java:683)
   at java.util.stream.ReferencePipeline$7$1.accept(ReferencePipeline.java:269)
   at java.util.HashMap$ValueSpliterator.forEachRemaining(HashMap.java:1664)
   at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:482)
   at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:472)
   at java.util.stream.ReduceOps$ReduceOp.evaluateSequential(ReduceOps.java:913)
   at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
   at java.util.stream.ReferencePipeline.collect(ReferencePipeline.java:511)
   at java.lang.management.ManagementFactory.getPlatformMXBeans(ManagementFactory.java:684)
   at java.lang.management.ManagementFactory.getGarbageCollectorMXBeans(ManagementFactory.java:421)
   at org.netbeans.core.ui.warmup.DiagnosticTask.logParams(DiagnosticTask.java:195)
   at org.netbeans.core.ui.warmup.DiagnosticTask.run(DiagnosticTask.java:82)
   at org.netbeans.core.startup.WarmUpSupport.run(WarmUpSupport.java:98)
   at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1443)
   at org.netbeans.modules.openide.util.GlobalLookup.execute(GlobalLookup.java:68)
   at org.openide.util.lookup.Lookups.executeWith(Lookups.java:303)
   at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:2058)