Debugging broken: Cannot read field "path" because "lspFrame.source" is null

[dsyer]

This happens in the LSP logs and no stack trace is available in the debugger (on all breakpoints):

Dec 15, 2025 11:20:13 AM com.microsoft.java.debug.core.adapter.ProtocolServer lambda$dispatchRequest$1
SEVERE: [error response][stackTrace]: Cannot read field "path" because "lspFrame.source" is null
java.lang.NullPointerException: Cannot read field "path" because "lspFrame.source" is null
	at com.microsoft.java.debug.core.adapter.handler.StackTraceRequestHandler.handle(StackTraceRequestHandler.java:118)
	at com.microsoft.java.debug.core.adapter.DebugAdapter.lambda$dispatchRequest$0(DebugAdapter.java:94)
	at java.base/java.util.concurrent.CompletableFuture.uniComposeStage(CompletableFuture.java:1208)
	at java.base/java.util.concurrent.CompletableFuture.thenCompose(CompletableFuture.java:2368)
	at com.microsoft.java.debug.core.adapter.DebugAdapter.dispatchRequest(DebugAdapter.java:93)
	at com.microsoft.java.debug.core.adapter.ProtocolServer.dispatchRequest(ProtocolServer.java:132)
	at com.microsoft.java.debug.core.protocol.AbstractProtocolServer.lambda$new$0(AbstractProtocolServer.java:81)
	at io.reactivex.internal.observers.LambdaObserver.onNext(LambdaObserver.java:63)
	at io.reactivex.internal.operators.observable.ObservableObserveOn$ObserveOnObserver.drainNormal(ObservableObserveOn.java:201)
	at io.reactivex.internal.operators.observable.ObservableObserveOn$ObserveOnObserver.run(ObservableObserveOn.java:255)
	at io.reactivex.internal.schedulers.ScheduledRunnable.run(ScheduledRunnable.java:66)
	at io.reactivex.internal.schedulers.ScheduledRunnable.call(ScheduledRunnable.java:57)
	at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:328)
	at java.base/java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:309)
	at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1090)
	at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:614)
	at java.base/java.lang.Thread.run(Thread.java:1474)

[mozhuanzuojing]

Resolved from microsoft/java-debug#617

[chagong]

@dsyer can you try prerelease version debugger for java: 0.58.2025121609?

[minjj0905]

I’m seeing the same issue on Debugger for Java : 0.58.3
Is there a known workaround or fix for this, or any additional configuration I should check?

[fbricon]

Please install vscode-java-debug 0.58.5, released earlier today. If you still have some issues with debugging, please open a ticket in https://github.com/microsoft/vscode-java-debug/issues.