Fail to start the KotlinLanguageServer about kotlin-language-server HOT 7 OPEN

This might indeed be related to #5. Could you please paste the output stack trace if there is one? It should look similar to this:

from kotlin-language-server.

After showing few lines in output, a dialog shows:

from kotlin-language-server.

@suenfung That's unfortunate. Could you please paste the lines from the output? Which OS are you running on?

from kotlin-language-server.

@fwcd
OS:
macOS High Sierra Version 10.13.5

Output Log:
[INFO] main main Connected to client
[INFO] client main Adding workspace file:///Users/user_dummy/Documents/projects/project_dummy to source path
[INFO] client main Adding 242 files under /Users/user_dummy/Documents/projects/project_dummy to source path
[INFO] client main Searching for dependencies in workspace root /Users/user_dummy/Documents/projects/project_dummy
[SEVERE] client org.ec Internal error: java.lang.reflect.InvocationTargetException
lipse.
lsp4j.
jsonrp
c.Remo
teEndp
oint

java.lang.RuntimeException: java.lang.reflect.InvocationTargetException
at org.eclipse.lsp4j.jsonrpc.services.GenericEndpoint.lambda$null$0(GenericEndpoint.java:63)
at org.eclipse.lsp4j.jsonrpc.services.GenericEndpoint.request(GenericEndpoint.java:116)
at org.eclipse.lsp4j.jsonrpc.RemoteEndpoint.handleRequest(RemoteEndpoint.java:257)
at org.eclipse.lsp4j.jsonrpc.RemoteEndpoint.consume(RemoteEndpoint.java:186)
at org.eclipse.lsp4j.jsonrpc.json.StreamMessageProducer.handleMessage(StreamMessageProducer.java:188)
at org.eclipse.lsp4j.jsonrpc.json.StreamMessageProducer.listen(StreamMessageProducer.java:90)
at org.eclipse.lsp4j.jsonrpc.json.ConcurrentMessageProcessor.run(ConcurrentMessageProcessor.java:95)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)
Caused by: java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.eclipse.lsp4j.jsonrpc.services.GenericEndpoint.lambda$null$0(GenericEndpoint.java:61)
... 11 more
Caused by: kotlin.KotlinNullPointerException
at org.javacs.kt.classpath.FindClassPathKt.mvnCommand(findClassPath.kt:215)
at org.javacs.kt.classpath.FindClassPathKt.generateMavenDependencyList(findClassPath.kt:70)
at org.javacs.kt.classpath.FindClassPathKt.readPom(findClassPath.kt:55)
at org.javacs.kt.classpath.FindClassPathKt.readProjectFile(findClassPath.kt:41)
at org.javacs.kt.classpath.FindClassPathKt.findClassPath(findClassPath.kt:24)
at org.javacs.kt.CompilerClassPath.refresh(CompilerClassPath.kt:13)
at org.javacs.kt.CompilerClassPath.addWorkspaceRoot(CompilerClassPath.kt:33)
at org.javacs.kt.KotlinLanguageServer.initialize(KotlinLanguageServer.kt:62)
... 16 more

[Error - 11:24:49 AM] Server initialization failed.
Message: Internal error.
Code: -32603
java.lang.RuntimeException: java.lang.reflect.InvocationTargetException
at org.eclipse.lsp4j.jsonrpc.services.GenericEndpoint.lambda$null$0(GenericEndpoint.java:63)
at org.eclipse.lsp4j.jsonrpc.services.GenericEndpoint.request(GenericEndpoint.java:116)
at org.eclipse.lsp4j.jsonrpc.RemoteEndpoint.handleRequest(RemoteEndpoint.java:257)
at org.eclipse.lsp4j.jsonrpc.RemoteEndpoint.consume(RemoteEndpoint.java:186)
at org.eclipse.lsp4j.jsonrpc.json.StreamMessageProducer.handleMessage(StreamMessageProducer.java:188)
at org.eclipse.lsp4j.jsonrpc.json.StreamMessageProducer.listen(StreamMessageProducer.java:90)
at org.eclipse.lsp4j.jsonrpc.json.ConcurrentMessageProcessor.run(ConcurrentMessageProcessor.java:95)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)
Caused by: java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.eclipse.lsp4j.jsonrpc.services.GenericEndpoint.lambda$null$0(GenericEndpoint.java:61)
... 11 more
Caused by: kotlin.KotlinNullPointerException
at org.javacs.kt.classpath.FindClassPathKt.mvnCommand(findClassPath.kt:215)
at org.javacs.kt.classpath.FindClassPathKt.generateMavenDependencyList(findClassPath.kt:70)
at org.javacs.kt.classpath.FindClassPathKt.readPom(findClassPath.kt:55)
at org.javacs.kt.classpath.FindClassPathKt.readProjectFile(findClassPath.kt:41)
at org.javacs.kt.classpath.FindClassPathKt.findClassPath(findClassPath.kt:24)
at org.javacs.kt.CompilerClassPath.refresh(CompilerClassPath.kt:13)
at org.javacs.kt.CompilerClassPath.addWorkspaceRoot(CompilerClassPath.kt:33)
at org.javacs.kt.KotlinLanguageServer.initialize(KotlinLanguageServer.kt:62)
... 16 more

from kotlin-language-server.

@suenfung Thanks, this seems to be an issue with the classpath resolver. Do you have any pom.xml files in your project, but not Maven installed (on your command line PATH)?

from kotlin-language-server.

I am seeing the same issue with a Gradle project (Spring Boot) that seems to unpack a pox.xml in the top level build/ directory. I do not have Maven installed, and I think this file will add invalid dependencies anyway.

It seems that for my issue, a workaround is to run ./gradlew clean before opening the project folder/workspace.

from kotlin-language-server.

I have the same issue, but I am using Visual Studio Code latest and I found the logs for the extension in my AppData directory structure (I'm on Windows):

`[Info - 1:51:13 p.m.] main Connected to client
[Info - 1:51:13 p.m.] client Adding workspace file:///c%3A/ws/roolz to source path
[Info - 1:51:13 p.m.] client Adding 57 files under c:\ws\roolz to source path
[Info - 1:51:13 p.m.] client Searching for dependencies in workspace root c:\ws\roolz
[Info - 1:51:13 p.m.] client Resolving dependencies for rlzactor through CLI...
[Info - 1:51:14 p.m.] client Creating temporary gradle file C:\Users\mkerr\AppData\Local\Temp\1\classpath9622557532420025474.gradle
[Info - 1:51:14 p.m.] client Found gradle.exe at C:\ProgramData\chocolatey\bin\gradle.exe
[Info - 1:51:20 p.m.] client Successfully resolved dependencies using Gradle dependencies CLI
[Info - 1:51:20 p.m.] client Resolving dependencies for rlzprotocol through CLI...
[Info - 1:51:20 p.m.] client Creating temporary gradle file C:\Users\mkerr\AppData\Local\Temp\1\classpath3687492058504834792.gradle
[Info - 1:51:20 p.m.] client Found gradle.exe at C:\ProgramData\chocolatey\bin\gradle.exe
[Info - 1:51:27 p.m.] client Successfully resolved dependencies using Gradle dependencies CLI
[Info - 1:51:28 p.m.] client Resolving dependencies for roolz through CLI...
[Info - 1:51:28 p.m.] client Creating temporary gradle file C:\Users\mkerr\AppData\Local\Temp\1\classpath12912053875673474220.gradle
[Info - 1:51:35 p.m.] client Successfully resolved dependencies using Gradle dependencies CLI
Jun. 06, 2019 1:51:35 P.M. org.eclipse.lsp4j.jsonrpc.RemoteEndpoint fallbackResponseError
SEVERE: Internal error: java.lang.reflect.InvocationTargetException
java.lang.RuntimeException: java.lang.reflect.InvocationTargetException
at org.eclipse.lsp4j.jsonrpc.services.GenericEndpoint.lambda$null$0(GenericEndpoint.java:67)
at org.eclipse.lsp4j.jsonrpc.services.GenericEndpoint.request(GenericEndpoint.java:120)
at org.eclipse.lsp4j.jsonrpc.RemoteEndpoint.handleRequest(RemoteEndpoint.java:261)
at org.eclipse.lsp4j.jsonrpc.RemoteEndpoint.consume(RemoteEndpoint.java:190)
at org.eclipse.lsp4j.jsonrpc.json.StreamMessageProducer.handleMessage(StreamMessageProducer.java:192)
at org.eclipse.lsp4j.jsonrpc.json.StreamMessageProducer.listen(StreamMessageProducer.java:94)
at org.eclipse.lsp4j.jsonrpc.json.ConcurrentMessageProcessor.run(ConcurrentMessageProcessor.java:99)
at java.base/java.util.concurrent.Executors$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$Worker.run(ThreadPoolExecutor.java:628)
at java.base/java.lang.Thread.run(Thread.java:834)
Caused by: java.lang.reflect.InvocationTargetException
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:566)
at org.eclipse.lsp4j.jsonrpc.services.GenericEndpoint.lambda$null$0(GenericEndpoint.java:65)
... 11 more
Caused by: kotlin.KotlinNullPointerException
at org.javacs.kt.classpath.FindClassPathKt.mvnCommand(FindClassPath.kt:268)
at org.javacs.kt.classpath.FindClassPathKt.generateMavenDependencyList(FindClassPath.kt:123)
at org.javacs.kt.classpath.FindClassPathKt.readPom(FindClassPath.kt:108)
at org.javacs.kt.classpath.FindClassPathKt.readProjectFile(FindClassPath.kt:94)
at org.javacs.kt.classpath.FindClassPathKt.findClassPath(FindClassPath.kt:25)
at org.javacs.kt.CompilerClassPath.refresh(CompilerClassPath.kt:13)
at org.javacs.kt.CompilerClassPath.addWorkspaceRoot(CompilerClassPath.kt:33)
at org.javacs.kt.KotlinLanguageServer.initialize(KotlinLanguageServer.kt:65)
... 16 more

[Error - 1:51:35 p.m.] client Internal error: java.lang.reflect.InvocationTargetException
[Error - 1:51:35 p.m.] Server initialization failed.
Message: Internal error.
Code: -32603
java.lang.RuntimeException: java.lang.reflect.InvocationTargetException
at org.eclipse.lsp4j.jsonrpc.services.GenericEndpoint.lambda$null$0(GenericEndpoint.java:67)
at org.eclipse.lsp4j.jsonrpc.services.GenericEndpoint.request(GenericEndpoint.java:120)
at org.eclipse.lsp4j.jsonrpc.RemoteEndpoint.handleRequest(RemoteEndpoint.java:261)
at org.eclipse.lsp4j.jsonrpc.RemoteEndpoint.consume(RemoteEndpoint.java:190)
at org.eclipse.lsp4j.jsonrpc.json.StreamMessageProducer.handleMessage(StreamMessageProducer.java:192)
at org.eclipse.lsp4j.jsonrpc.json.StreamMessageProducer.listen(StreamMessageProducer.java:94)
at org.eclipse.lsp4j.jsonrpc.json.ConcurrentMessageProcessor.run(ConcurrentMessageProcessor.java:99)
at java.base/java.util.concurrent.Executors$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$Worker.run(ThreadPoolExecutor.java:628)
at java.base/java.lang.Thread.run(Thread.java:834)
Caused by: java.lang.reflect.InvocationTargetException
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:566)
at org.eclipse.lsp4j.jsonrpc.services.GenericEndpoint.lambda$null$0(GenericEndpoint.java:65)
... 11 more
Caused by: kotlin.KotlinNullPointerException
at org.javacs.kt.classpath.FindClassPathKt.mvnCommand(FindClassPath.kt:268)
at org.javacs.kt.classpath.FindClassPathKt.generateMavenDependencyList(FindClassPath.kt:123)
at org.javacs.kt.classpath.FindClassPathKt.readPom(FindClassPath.kt:108)
at org.javacs.kt.classpath.FindClassPathKt.readProjectFile(FindClassPath.kt:94)
at org.javacs.kt.classpath.FindClassPathKt.findClassPath(FindClassPath.kt:25)
at org.javacs.kt.CompilerClassPath.refresh(CompilerClassPath.kt:13)
at org.javacs.kt.CompilerClassPath.addWorkspaceRoot(CompilerClassPath.kt:33)
at org.javacs.kt.KotlinLanguageServer.initialize(KotlinLanguageServer.kt:65)
... 16 more `

from kotlin-language-server.