org.eclipse.core.commands.ExecutionException: While executing the action, an exception occurred
	at org.eclipse.jface.commands.ActionHandler.execute(ActionHandler.java:126)
	at org.eclipse.ui.internal.handlers.E4HandlerProxy.execute(E4HandlerProxy.java:97)
	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)
	at org.eclipse.e4.core.internal.di.InjectorImpl.invokeUsingClass(InjectorImpl.java:317)
	at org.eclipse.e4.core.internal.di.InjectorImpl.invoke(InjectorImpl.java:251)
	at org.eclipse.e4.core.contexts.ContextInjectionFactory.invoke(ContextInjectionFactory.java:173)
	at org.eclipse.e4.core.commands.internal.HandlerServiceHandler.execute(HandlerServiceHandler.java:156)
	at org.eclipse.core.commands.Command.executeWithChecks(Command.java:488)
	at org.eclipse.core.commands.ParameterizedCommand.executeWithChecks(ParameterizedCommand.java:485)
	at org.eclipse.e4.core.commands.internal.HandlerServiceImpl.executeHandler(HandlerServiceImpl.java:213)
	at org.eclipse.ui.internal.handlers.LegacyHandlerService.executeCommand(LegacyHandlerService.java:389)
	at org.eclipse.ui.internal.handlers.LegacyHandlerService.executeCommand(LegacyHandlerService.java:366)
	at org.springframework.tooling.ls.eclipse.commons.commands.InvokeContentAssistCommandHandler.lambda$0(InvokeContentAssistCommandHandler.java:34)
	at org.eclipse.core.runtime.jobs.Job$2.run(Job.java:187)
	at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63)
Caused by: org.eclipse.swt.SWTException: Invalid thread access
	at org.eclipse.swt.SWT.error(SWT.java:4918)
	at org.eclipse.swt.SWT.error(SWT.java:4833)
	at org.eclipse.swt.SWT.error(SWT.java:4804)
	at org.eclipse.swt.widgets.Display.error(Display.java:1209)
	at org.eclipse.swt.widgets.Display.checkDevice(Display.java:708)
	at org.eclipse.swt.widgets.Display.getSystemCursor(Display.java:2097)
	at org.eclipse.swt.custom.BusyIndicator.setBusyCursor(BusyIndicator.java:198)
	at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:64)
	at org.eclipse.ui.texteditor.ContentAssistAction.run(ContentAssistAction.java:84)
	at org.eclipse.ui.texteditor.RetargetTextEditorAction.run(RetargetTextEditorAction.java:232)
	at org.eclipse.jface.action.Action.runWithEvent(Action.java:474)
	at org.eclipse.jface.commands.ActionHandler.execute(ActionHandler.java:123)
	... 18 more