Exception occurred while creating an instance of the stream connection provider

[sgulci]

Hi,

when i save the file, sts4 eclipse puts error logs , looks like language server thing but i have no idea

eclipse.buildId=4.0.0.201809220817-RELEASE
java.version=1.8.0_131
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

This is a continuation of log file D:\Users\sgulci\eclipse-workspace.metadata.bak_1.log
Created Time: 2018-10-16 12:59:06.637

org.eclipse.lsp4e
Error
Tue Oct 16 14:39:17 EET 2018
Exception occurred while creating an instance of the stream connection provider

java.lang.RuntimeException: Exception occurred while creating an instance of the stream connection provider
at org.eclipse.lsp4e.LanguageServersRegistry$ExtensionLanguageServerDefinition.createConnectionProvider(LanguageServersRegistry.java:117)
at org.eclipse.lsp4e.LanguageServerWrapper.start(LanguageServerWrapper.java:196)
at org.eclipse.lsp4e.LanguageServerWrapper.getInitializedServer(LanguageServerWrapper.java:532)
at org.eclipse.lsp4e.LanguageServiceAccessor$LSPDocumentInfo.getInitializedLanguageClient(LanguageServiceAccessor.java:125)
at org.eclipse.lsp4e.operations.codelens.CodeLensProvider.lambda$0(CodeLensProvider.java:44)
at java.util.concurrent.CompletableFuture$AsyncSupply.run(CompletableFuture.java:1590)
at java.util.concurrent.CompletableFuture$AsyncSupply.exec(CompletableFuture.java:1582)
at java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:289)
at java.util.concurrent.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1056)
at java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1692)
at java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:157)
Caused by: org.eclipse.core.runtime.CoreException: Plug-in "org.springframework.tooling.boot.ls" was unable to instantiate class "org.springframework.tooling.boot.ls.DelegatingStreamConnectionProvider".
at org.eclipse.core.internal.registry.osgi.RegistryStrategyOSGI.throwException(RegistryStrategyOSGI.java:200)
at org.eclipse.core.internal.registry.osgi.RegistryStrategyOSGI.createExecutableExtension(RegistryStrategyOSGI.java:194)
at org.eclipse.core.internal.registry.ExtensionRegistry.createExecutableExtension(ExtensionRegistry.java:934)
at org.eclipse.core.internal.registry.ConfigurationElement.createExecutableExtension(ConfigurationElement.java:246)
at org.eclipse.core.internal.registry.ConfigurationElementHandle.createExecutableExtension(ConfigurationElementHandle.java:63)
at org.eclipse.lsp4e.LanguageServersRegistry$ExtensionLanguageServerDefinition.createConnectionProvider(LanguageServersRegistry.java:114)
... 10 more
Caused by: java.lang.NoClassDefFoundError: org/springframework/tooling/boot/ls/SpringBootLanguageServer
at org.springframework.tooling.boot.ls.DelegatingStreamConnectionProvider.(DelegatingStreamConnectionProvider.java:64)
at sun.reflect.GeneratedConstructorAccessor47.newInstance(Unknown Source)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
at java.lang.Class.newInstance(Class.java:442)
at org.eclipse.core.internal.registry.osgi.RegistryStrategyOSGI.createExecutableExtension(RegistryStrategyOSGI.java:190)
... 14 more

---

eclipse.buildId=4.0.0.201809220817-RELEASE
java.version=1.8.0_131
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

This is a continuation of log file D:\Users\sgulci\eclipse-workspace.metadata.bak_1.log
Created Time: 2018-10-16 12:59:06.637

org.eclipse.lsp4e
Error
Tue Oct 16 14:39:17 EET 2018
Plug-in "org.springframework.tooling.boot.ls" was unable to instantiate class "org.springframework.tooling.boot.ls.DelegatingStreamConnectionProvider".

org.eclipse.core.runtime.CoreException: Plug-in "org.springframework.tooling.boot.ls" was unable to instantiate class "org.springframework.tooling.boot.ls.DelegatingStreamConnectionProvider".
at org.eclipse.core.internal.registry.osgi.RegistryStrategyOSGI.throwException(RegistryStrategyOSGI.java:200)
at org.eclipse.core.internal.registry.osgi.RegistryStrategyOSGI.createExecutableExtension(RegistryStrategyOSGI.java:194)
at org.eclipse.core.internal.registry.ExtensionRegistry.createExecutableExtension(ExtensionRegistry.java:934)
at org.eclipse.core.internal.registry.ConfigurationElement.createExecutableExtension(ConfigurationElement.java:246)
at org.eclipse.core.internal.registry.ConfigurationElementHandle.createExecutableExtension(ConfigurationElementHandle.java:63)
at org.eclipse.lsp4e.LanguageServersRegistry$ExtensionLanguageServerDefinition.createConnectionProvider(LanguageServersRegistry.java:114)
at org.eclipse.lsp4e.LanguageServerWrapper.start(LanguageServerWrapper.java:196)
at org.eclipse.lsp4e.LanguageServerWrapper.getInitializedServer(LanguageServerWrapper.java:532)
at org.eclipse.lsp4e.LanguageServiceAccessor$LSPDocumentInfo.getInitializedLanguageClient(LanguageServiceAccessor.java:125)
at org.eclipse.lsp4e.operations.codelens.CodeLensProvider.lambda$0(CodeLensProvider.java:44)
at java.util.concurrent.CompletableFuture$AsyncSupply.run(CompletableFuture.java:1590)
at java.util.concurrent.CompletableFuture$AsyncSupply.exec(CompletableFuture.java:1582)
at java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:289)
at java.util.concurrent.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1056)
at java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1692)
at java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:157)
Caused by: java.lang.NoClassDefFoundError: org/springframework/tooling/boot/ls/SpringBootLanguageServer
at org.springframework.tooling.boot.ls.DelegatingStreamConnectionProvider.(DelegatingStreamConnectionProvider.java:64)
at sun.reflect.GeneratedConstructorAccessor47.newInstance(Unknown Source)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
at java.lang.Class.newInstance(Class.java:442)
at org.eclipse.core.internal.registry.osgi.RegistryStrategyOSGI.createExecutableExtension(RegistryStrategyOSGI.java:190)
... 14 more

[martinlippert]

I think I saw something like this before a while ago. Can you try to run your STS4 install with the -clean parameter once to see if that solves the issue?

If not, we would need to dive a bit deeper. For that it would be good to know if you are running a vanilla Spring Tools 4 for Eclipse distribution download or if you installed the Spring Tools 4 into an existing Eclipse installation - and if so, which version of Eclipse this was. Just as some up-front debug info request... :-)

[sgulci]

i think -clean resolves the issue but i use sts from toolbar, in this way i create shortcut, hmm i think we lose some usability catch like pin to taskbar in windows, maybe next release you to decide this. i am good for now. thanks for the quick response.

[martinlippert]

Usually you need to run with -clean only once to clean things up if something goes wrong, so no need to add the -clean option to your launch shortcut permanently.

[SanthoshiBeeram]

I am getting the same error as above even after performing the clean. Can you please suggest what to do to resolve the issue

[martinlippert]

@SanthoshiBeeram It is hard to guess what exactly is going wrong on your side, but are you running STS on Windows? And if so, how do you install STS? In case you are on Windows, it would be good to validate if downloading a fresh distribution for Windows, running the self-extracting JAR file, and then running STS would cause the same error.