Cannot read properties of undefined (reading 'start')

[mamilic]

Describe the bug
Java import fails with a warrning

To Reproduce
Steps to reproduce the behavior:

java.util.concurrent.CompletionException: org.eclipse.lsp4j.jsonrpc.ResponseErrorException: Request workspace/executeClientCommand failed with message: Cannot read properties of undefined (reading 'start')
	at java.base/java.util.concurrent.CompletableFuture.wrapInCompletionException(CompletableFuture.java:323)
	at java.base/java.util.concurrent.CompletableFuture.reportJoin(CompletableFuture.java:457)
	at java.base/java.util.concurrent.CompletableFuture.join(CompletableFuture.java:2139)
	at org.eclipse.jdt.ls.core.internal.JavaClientConnection.executeClientCommand(JavaClientConnection.java:89)
	at org.springframework.tooling.jdt.ls.extension.JdtLsExtensionPlugin.lambda$2(JdtLsExtensionPlugin.java:47)
	at org.springframework.tooling.jdt.ls.commons.BootProjectTracker.fireEvent(BootProjectTracker.java:78)
	at org.springframework.tooling.jdt.ls.commons.BootProjectTracker.processProject(BootProjectTracker.java:63)
	at org.springframework.tooling.jdt.ls.commons.BootProjectTracker.<init>(BootProjectTracker.java:53)
	at org.springframework.tooling.jdt.ls.extension.JdtLsExtensionPlugin.lambda$1(JdtLsExtensionPlugin.java:57)
	at java.base/java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:739)
	at java.base/java.util.concurrent.CompletableFuture.postComplete(CompletableFuture.java:531)
	at java.base/java.util.concurrent.CompletableFuture.complete(CompletableFuture.java:2206)
	at org.springframework.tooling.jdt.ls.extension.JdtLsExtensionPlugin$1.done(JdtLsExtensionPlugin.java:84)
	at org.eclipse.core.internal.jobs.JobListeners.sendEvent(JobListeners.java:153)
	at org.eclipse.core.internal.jobs.JobListeners.sendEventsAsync(JobListeners.java:140)
	at org.eclipse.core.internal.jobs.JobListeners.waitAndSendEvents(JobListeners.java:80)
	at org.eclipse.core.internal.jobs.JobManager.withWriteLock(JobManager.java:571)
	at org.eclipse.core.internal.jobs.JobManager.endJob(JobManager.java:785)
	at org.eclipse.core.internal.jobs.WorkerPool.endJob(WorkerPool.java:118)
	at org.eclipse.core.internal.jobs.Worker.run(Worker.java:83)
Caused by: org.eclipse.lsp4j.jsonrpc.ResponseErrorException: Request workspace/executeClientCommand failed with message: Cannot read properties of undefined (reading 'start')
	at org.eclipse.lsp4j.jsonrpc.RemoteEndpoint.handleResponse(RemoteEndpoint.java:220)
	at org.eclipse.lsp4j.jsonrpc.RemoteEndpoint.consume(RemoteEndpoint.java:204)
	at org.eclipse.jdt.ls.core.internal.ParentProcessWatcher.lambda$1(ParentProcessWatcher.java:86)
	at org.eclipse.lsp4j.jsonrpc.json.StreamMessageProducer.handleMessage(StreamMessageProducer.java:185)
	at org.eclipse.lsp4j.jsonrpc.json.StreamMessageProducer.listen(StreamMessageProducer.java:97)
	at org.eclipse.lsp4j.jsonrpc.json.ConcurrentMessageProcessor.run(ConcurrentMessageProcessor.java:114)
	at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:545)
	at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:328)
	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)

Expected behavior
A clear and concise description of what you expected to happen.

Screenshots
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Environment

• Operating System:
• JDK version:
• Visual Studio Code version:
• Java extension version:

Additional Information

[datho7561]

What version of the extension are you using?

The traceback looks like it goes through the Spring Boot tooling code, maybe that's related?

[mamilic]

Hi @datho7561 , thanks for quick reply.

I am using the latest release version of both plugins. It seems that spring plugin introduced new variable spring-boot.ls.java.home, and if not set it will try to find the java version by looking at env variable JAVA_HOME. As I am using sdkman it can not find any Java on system.

The workaroud is to set the spring-boot.ls.java.home.

[datho7561]

Hmm I definitely saw it once, but from a fresh install I don't see anything anymore.