NPE while opening HealthChecks view

[amitjoy]

java.util.concurrent.ExecutionException: org.eclipse.e4.core.di.InjectionException: java.lang.NullPointerException: Cannot invoke "javafx.scene.control.ToggleButton.setSelected(boolean)" because "this.tagHcButton" is null
	at java.base/java.util.concurrent.FutureTask.report(FutureTask.java:122)
	at java.base/java.util.concurrent.FutureTask.get(FutureTask.java:191)
	at org.eclipse.fx.ui.controls.internal.FXThreadSynchronizeImpl.syncExec(FXThreadSynchronizeImpl.java:116)
	at org.eclipse.fx.ui.workbench.fx.internal.UISynchronizeImpl.syncExec(UISynchronizeImpl.java:53)
	at org.eclipse.e4.ui.internal.di.UIEventObjectSupplier$UIEventHandler.handleEvent(UIEventObjectSupplier.java:64)
	at org.eclipse.equinox.internal.event.EventHandlerWrapper.handleEvent(EventHandlerWrapper.java:205)
	at org.eclipse.equinox.internal.event.EventHandlerTracker.dispatchEvent(EventHandlerTracker.java:203)
	at org.eclipse.equinox.internal.event.EventHandlerTracker.dispatchEvent(EventHandlerTracker.java:1)
	at org.eclipse.osgi.framework.eventmgr.EventManager.dispatchEvent(EventManager.java:234)
	at org.eclipse.osgi.framework.eventmgr.EventManager$EventThread.run(EventManager.java:345)
Caused by: org.eclipse.e4.core.di.InjectionException: java.lang.NullPointerException: Cannot invoke "javafx.scene.control.ToggleButton.setSelected(boolean)" because "this.tagHcButton" is null
	at org.eclipse.e4.core.internal.di.MethodRequestor.execute(MethodRequestor.java:68)
	at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:539)
	at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
	at javafx.graphics/com.sun.javafx.application.PlatformImpl.lambda$runLater$10(PlatformImpl.java:457)
	at java.base/java.security.AccessController.doPrivileged(AccessController.java:399)
	at javafx.graphics/com.sun.javafx.application.PlatformImpl.lambda$runLater$11(PlatformImpl.java:456)
	at javafx.graphics/com.sun.glass.ui.InvokeLaterDispatcher$Future.run(InvokeLaterDispatcher.java:96)
Caused by: java.lang.NullPointerException: Cannot invoke "javafx.scene.control.ToggleButton.setSelected(boolean)" because "this.tagHcButton" is null
	at com.osgifx.console.ui.healthchecks.HealthCheckFxController.updateOnDataRetrievedEvent(HealthCheckFxController.java:325)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77)
	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.base/java.lang.reflect.Method.invoke(Method.java:568)
	at org.eclipse.e4.core.internal.di.MethodRequestor.execute(MethodRequestor.java:58)
	... 6 common frames omitted