Request textDocument/hover failed

[Alexaas]

Hi,

when working on rules with the openhab extension for vscode the following error pops up all the time in the OUTPUT console:
[Error - 07:14:27] Request textDocument/hover failed.
Message: Internal error.
Code: -32603
java.util.concurrent.CompletionException: java.lang.NullPointerException
at java.base/java.util.concurrent.CompletableFuture.encodeThrowable(CompletableFuture.java:331)
at java.base/java.util.concurrent.CompletableFuture.completeThrowable(CompletableFuture.java:346)
at java.base/java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:704)
at java.base/java.util.concurrent.CompletableFuture.postComplete(CompletableFuture.java:506)
at java.base/java.util.concurrent.CompletableFuture.completeExceptionally(CompletableFuture.java:2088)
at org.eclipse.xtext.ide.server.concurrent.AbstractRequest.logAndCompleteExceptionally(AbstractRequest.java:73)
at org.eclipse.xtext.ide.server.concurrent.ReadRequest.lambda$doRun$0(ReadRequest.java:69)
at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515)
at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
at java.base/java.lang.Thread.run(Thread.java:829)
Caused by: java.lang.NullPointerException
at org.eclipse.xtext.ide.server.WorkspaceManager.getDocument(WorkspaceManager.java:455)
at org.eclipse.xtext.ide.server.WorkspaceManager.doRead(WorkspaceManager.java:437)
at org.eclipse.xtext.ide.server.LanguageServerImpl.hover(LanguageServerImpl.java:718)
at org.eclipse.xtext.ide.server.LanguageServerImpl.lambda$hover$30(LanguageServerImpl.java:705)
at org.eclipse.xtext.ide.server.concurrent.ReadRequest.lambda$doRun$0(ReadRequest.java:66)
... 5 more

openhab extension version 1.0.0
vscode: 1.69.1 on Windows 10

[Confectrician]

This is an error produced by the lsp server running on the openhab instance self.
See #274 or #269 for different other erros that are related with the lsp server.

Nothing we can really do on the client side here. (Except disabling the remote lsp via setting).
LSP would need a complete rewrite on both sides.