LSP4E Error

[anumalasri]

I am using STS4 in Win10 and have few gradle and maven projects in my workspace.
Getting below exceptions in workspace log and its causing horrible slowness while working with Tool4.

I could not able to disable 'Language Servers' using preferences.

Are there any settings available to STS4, to fix this issue?

eclipse.buildId=4.0.0.201711271125-M6
java.version=1.8.0_121
java.vendor=Oracle Corporation
BootLoader constants: OS=win32, ARCH=x86_64, WS=win32, NL=en_US
Framework arguments:  -product org.springframework.boot.ide.branding.sts4
Command-line arguments:  -os win32 -ws win32 -arch x86_64 -product org.springframework.boot.ide.branding.sts4

!ENTRY org.eclipse.lsp4e 4 0 2017-12-11 23:41:48.162
!MESSAGE java.util.concurrent.CancellationException
!STACK 0
java.util.concurrent.CompletionException: java.util.concurrent.CancellationException
	at java.util.concurrent.CompletableFuture.encodeThrowable(CompletableFuture.java:292)
	at java.util.concurrent.CompletableFuture.completeThrowable(CompletableFuture.java:308)
	at java.util.concurrent.CompletableFuture.uniApply(CompletableFuture.java:593)
	at java.util.concurrent.CompletableFuture$UniApply.tryFire(CompletableFuture.java:577)
	at java.util.concurrent.CompletableFuture.postComplete(CompletableFuture.java:474)
	at java.util.concurrent.CompletableFuture.cancel(CompletableFuture.java:2265)
	at org.eclipse.lsp4e.LanguageServerWrapper.stop(LanguageServerWrapper.java:283)
	at org.eclipse.lsp4e.LanguageServerWrapper.start(LanguageServerWrapper.java:169)
	at org.eclipse.lsp4e.LanguageServerWrapper.getInitializedServer(LanguageServerWrapper.java:457)
	at org.eclipse.lsp4e.LanguageServerWrapper.getServerCapabilities(LanguageServerWrapper.java:488)
	at org.eclipse.lsp4e.LanguageServiceAccessor.lambda$4(LanguageServiceAccessor.java:312)
	at java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:174)
	at java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:175)
	at java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1548)
	at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:481)
	at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:471)
	at java.util.stream.ReduceOps$ReduceOp.evaluateSequential(ReduceOps.java:708)
	at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
	at java.util.stream.ReferencePipeline.collect(ReferencePipeline.java:499)
	at org.eclipse.lsp4e.LanguageServiceAccessor.getMatchingStartedWrappers(LanguageServiceAccessor.java:313)
	at org.eclipse.lsp4e.LanguageServiceAccessor.getLSWrappers(LanguageServiceAccessor.java:221)
	at org.eclipse.lsp4e.LanguageServiceAccessor.getLSPDocumentInfosFor(LanguageServiceAccessor.java:354)
	at org.eclipse.lsp4e.operations.declaration.OpenDeclarationHyperlinkDetector.detectHyperlinks(OpenDeclarationHyperlinkDetector.java:77)
	at org.eclipse.ui.texteditor.HyperlinkDetectorRegistry$HyperlinkDetectorDelegate.detectHyperlinks(HyperlinkDetectorRegistry.java:78)
	at org.eclipse.jface.text.hyperlink.HyperlinkManager.findHyperlinks(HyperlinkManager.java:286)
	at org.eclipse.jface.text.hyperlink.HyperlinkManager.findHyperlinks(HyperlinkManager.java:259)
	at org.eclipse.jface.text.hyperlink.HyperlinkManager.mouseMove(HyperlinkManager.java:454)
	at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:213)
	at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:86)
	at org.eclipse.swt.widgets.Display.sendEvent(Display.java:4428)
	at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1079)
	at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4238)
	at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3817)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$5.run(PartRenderingEngine.java:1150)
	at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:336)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1039)
	at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:153)
	at org.eclipse.ui.internal.Workbench.lambda$3(Workbench.java:680)
	at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:336)
	at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:594)
	at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:148)
	at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:151)
	at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196)
	at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:134)
	at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:104)
	at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:388)
	at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:243)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:653)
	at org.eclipse.equinox.launcher.Main.basicRun(Main.java:590)
	at org.eclipse.equinox.launcher.Main.run(Main.java:1499)
	at org.eclipse.equinox.launcher.Main.main(Main.java:1472)
Caused by: java.util.concurrent.CancellationException
	at java.util.concurrent.CompletableFuture.cancel(CompletableFuture.java:2263)
	... 49 more

!ENTRY org.eclipse.lsp4e 4 0 2017-12-11 23:41:58.184
!MESSAGE LanguageServer not initialized after 10s
!STACK 0
java.util.concurrent.TimeoutException
	at java.util.concurrent.CompletableFuture.timedGet(CompletableFuture.java:1771)
	at java.util.concurrent.CompletableFuture.get(CompletableFuture.java:1915)
	at org.eclipse.lsp4e.LanguageServerWrapper.getServerCapabilities(LanguageServerWrapper.java:488)
	at org.eclipse.lsp4e.LanguageServiceAccessor.lambda$4(LanguageServiceAccessor.java:312)
	at java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:174)
	at java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:175)
	at java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1548)
	at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:481)
	at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:471)
	at java.util.stream.ReduceOps$ReduceOp.evaluateSequential(ReduceOps.java:708)
	at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
	at java.util.stream.ReferencePipeline.collect(ReferencePipeline.java:499)
	at org.eclipse.lsp4e.LanguageServiceAccessor.getMatchingStartedWrappers(LanguageServiceAccessor.java:313)
	at org.eclipse.lsp4e.LanguageServiceAccessor.getLSWrappers(LanguageServiceAccessor.java:221)
	at org.eclipse.lsp4e.LanguageServiceAccessor.getLSPDocumentInfosFor(LanguageServiceAccessor.java:354)
	at org.eclipse.lsp4e.operations.declaration.OpenDeclarationHyperlinkDetector.detectHyperlinks(OpenDeclarationHyperlinkDetector.java:77)
	at org.eclipse.ui.texteditor.HyperlinkDetectorRegistry$HyperlinkDetectorDelegate.detectHyperlinks(HyperlinkDetectorRegistry.java:78)
	at org.eclipse.jface.text.hyperlink.HyperlinkManager.findHyperlinks(HyperlinkManager.java:286)
	at org.eclipse.jface.text.hyperlink.HyperlinkManager.findHyperlinks(HyperlinkManager.java:259)
	at org.eclipse.jface.text.hyperlink.HyperlinkManager.mouseMove(HyperlinkManager.java:454)
	at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:213)
	at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:86)
	at org.eclipse.swt.widgets.Display.sendEvent(Display.java:4428)
	at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1079)
	at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4238)
	at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3817)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$5.run(PartRenderingEngine.java:1150)
	at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:336)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1039)
	at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:153)
	at org.eclipse.ui.internal.Workbench.lambda$3(Workbench.java:680)
	at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:336)
	at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:594)
	at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:148)
	at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:151)
	at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196)
	at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:134)
	at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:104)
	at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:388)
	at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:243)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:653)
	at org.eclipse.equinox.launcher.Main.basicRun(Main.java:590)
	at org.eclipse.equinox.launcher.Main.run(Main.java:1499)
	at org.eclipse.equinox.launcher.Main.main(Main.java:1472)

[martinlippert]

This looks like a duplicate of #25. Can you double check if the latest nightly CI build works any better on your end? You can grab it from here: http://dist.springsource.com/snapshot/STS4/nightly-distributions.html

If not, please comment and we re-open the issue.