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Built errors and "Velocity is not initialized correctly." error
Trying to open a Java project but getting some build errors.
Environment
- Operating System: Fedora 29
- JDK version: openjdk version "1.8.0_191"
- Visual Studio Code version: 1.30.1
- Java extension version: 0.4.0
Steps To Reproduce
Just try to open the folder for the project https://github.com/strimzi/strimzi-kafka-operator
Current Result
What I get are the following errors:

where "api" is a project inside the repo from which other projects depends upon. The output from the Java server shows:
[Error - 14:16:05] 11-Jan-2019 14:16:05 Problems occurred when invoking code from plug-in: "org.eclipse.core.resources".
The specified class for ResourceManager (org.apache.velocity.runtime.resource.ResourceManagerImpl) does not implement org.apache.velocity.runtime.resource.ResourceManager; Velocity is not initialized correctly.
org.apache.velocity.exception.VelocityException: The specified class for ResourceManager (org.apache.velocity.runtime.resource.ResourceManagerImpl) does not implement org.apache.velocity.runtime.resource.ResourceManager; Velocity is not initialized correctly.
at org.apache.velocity.runtime.RuntimeInstance.initializeResourceManager(RuntimeInstance.java:725)
at org.apache.velocity.runtime.RuntimeInstance.init(RuntimeInstance.java:263)
at org.apache.velocity.app.VelocityEngine.init(VelocityEngine.java:93)
at io.sundr.codegen.generator.CodeGeneratorContext.<init>(CodeGeneratorContext.java:42)
at io.sundr.codegen.generator.CodeGeneratorContext.<init>(CodeGeneratorContext.java:33)
at io.sundr.codegen.processor.JavaGeneratingProcessor.<init>(JavaGeneratingProcessor.java:30)
at io.sundr.builder.internal.processor.AbstractBuilderProcessor.<init>(AbstractBuilderProcessor.java:55)
at io.sundr.builder.internal.processor.BuildableProcessor.<init>(BuildableProcessor.java:48)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
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.jdt.apt.core.internal.ClassServiceFactory.newInstance(ClassServiceFactory.java:30)
at org.eclipse.jdt.internal.apt.pluggable.core.dispatch.IdeAnnotationProcessorManager.discoverNextProcessor(IdeAnnotationProcessorManager.java:96)
at org.eclipse.jdt.internal.compiler.apt.dispatch.RoundDispatcher.round(RoundDispatcher.java:119)
at org.eclipse.jdt.internal.compiler.apt.dispatch.BaseAnnotationProcessorManager.processAnnotations(BaseAnnotationProcessorManager.java:171)
at org.eclipse.jdt.internal.apt.pluggable.core.dispatch.IdeAnnotationProcessorManager.processAnnotations(IdeAnnotationProcessorManager.java:138)
at org.eclipse.jdt.internal.compiler.Compiler.processAnnotations(Compiler.java:940)
at org.eclipse.jdt.internal.compiler.Compiler.compile(Compiler.java:450)
at org.eclipse.jdt.internal.compiler.Compiler.compile(Compiler.java:426)
at org.eclipse.jdt.internal.core.builder.AbstractImageBuilder.compile(AbstractImageBuilder.java:386)
at org.eclipse.jdt.internal.core.builder.BatchImageBuilder.compile(BatchImageBuilder.java:214)
at org.eclipse.jdt.internal.core.builder.AbstractImageBuilder.compile(AbstractImageBuilder.java:318)
at org.eclipse.jdt.internal.core.builder.BatchImageBuilder.build(BatchImageBuilder.java:79)
at org.eclipse.jdt.internal.core.builder.JavaBuilder.buildAll(JavaBuilder.java:264)
at org.eclipse.jdt.internal.core.builder.JavaBuilder.build(JavaBuilder.java:182)
at org.eclipse.core.internal.events.BuildManager$2.run(BuildManager.java:833)
at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:45)
at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:220)
at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:263)
at org.eclipse.core.internal.events.BuildManager$1.run(BuildManager.java:316)
at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:45)
at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:319)
at org.eclipse.core.internal.events.BuildManager.basicBuildLoop(BuildManager.java:371)
at org.eclipse.core.internal.events.BuildManager.build(BuildManager.java:392)
at org.eclipse.core.internal.events.AutoBuildJob.doBuild(AutoBuildJob.java:154)
at org.eclipse.core.internal.events.AutoBuildJob.run(AutoBuildJob.java:244)
at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63)
[Error - 14:16:06] 11-Jan-2019 14:16:06 Errors occurred during the build.
[Error - 14:16:35] 11-Jan-2019 14:16:35 Problems occurred when invoking code from plug-in: "org.eclipse.core.resources".
The specified class for ResourceManager (org.apache.velocity.runtime.resource.ResourceManagerImpl) does not implement org.apache.velocity.runtime.resource.ResourceManager; Velocity is not initialized correctly.
org.apache.velocity.exception.VelocityException: The specified class for ResourceManager (org.apache.velocity.runtime.resource.ResourceManagerImpl) does not implement org.apache.velocity.runtime.resource.ResourceManager; Velocity is not initialized correctly.
at org.apache.velocity.runtime.RuntimeInstance.initializeResourceManager(RuntimeInstance.java:725)
at org.apache.velocity.runtime.RuntimeInstance.init(RuntimeInstance.java:263)
at org.apache.velocity.app.VelocityEngine.init(VelocityEngine.java:93)
at io.sundr.codegen.generator.CodeGeneratorContext.<init>(CodeGeneratorContext.java:42)
at io.sundr.codegen.generator.CodeGeneratorContext.<init>(CodeGeneratorContext.java:33)
at io.sundr.codegen.processor.JavaGeneratingProcessor.<init>(JavaGeneratingProcessor.java:30)
at io.sundr.builder.internal.processor.AbstractBuilderProcessor.<init>(AbstractBuilderProcessor.java:55)
at io.sundr.builder.internal.processor.BuildableProcessor.<init>(BuildableProcessor.java:48)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
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.jdt.apt.core.internal.ClassServiceFactory.newInstance(ClassServiceFactory.java:30)
at org.eclipse.jdt.internal.apt.pluggable.core.dispatch.IdeAnnotationProcessorManager.discoverNextProcessor(IdeAnnotationProcessorManager.java:96)
at org.eclipse.jdt.internal.compiler.apt.dispatch.RoundDispatcher.round(RoundDispatcher.java:119)
at org.eclipse.jdt.internal.compiler.apt.dispatch.BaseAnnotationProcessorManager.processAnnotations(BaseAnnotationProcessorManager.java:171)
at org.eclipse.jdt.internal.apt.pluggable.core.dispatch.IdeAnnotationProcessorManager.processAnnotations(IdeAnnotationProcessorManager.java:138)
at org.eclipse.jdt.internal.compiler.Compiler.processAnnotations(Compiler.java:940)
at org.eclipse.jdt.internal.compiler.Compiler.compile(Compiler.java:450)
at org.eclipse.jdt.internal.compiler.Compiler.compile(Compiler.java:426)
at org.eclipse.jdt.internal.core.builder.AbstractImageBuilder.compile(AbstractImageBuilder.java:386)
at org.eclipse.jdt.internal.core.builder.BatchImageBuilder.compile(BatchImageBuilder.java:214)
at org.eclipse.jdt.internal.core.builder.AbstractImageBuilder.compile(AbstractImageBuilder.java:318)
at org.eclipse.jdt.internal.core.builder.BatchImageBuilder.build(BatchImageBuilder.java:79)
at org.eclipse.jdt.internal.core.builder.JavaBuilder.buildAll(JavaBuilder.java:264)
at org.eclipse.jdt.internal.core.builder.JavaBuilder.build(JavaBuilder.java:182)
at org.eclipse.core.internal.events.BuildManager$2.run(BuildManager.java:833)
at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:45)
at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:220)
at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:263)
at org.eclipse.core.internal.events.BuildManager$1.run(BuildManager.java:316)
at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:45)
at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:319)
at org.eclipse.core.internal.events.BuildManager.basicBuildLoop(BuildManager.java:371)
at org.eclipse.core.internal.events.BuildManager.build(BuildManager.java:392)
at org.eclipse.core.internal.resources.Workspace.buildInternal(Workspace.java:504)
at org.eclipse.core.internal.resources.Workspace.build(Workspace.java:404)
at org.eclipse.jdt.ls.core.internal.handlers.BuildWorkspaceHandler.buildWorkspace(BuildWorkspaceHandler.java:65)
at org.eclipse.jdt.ls.core.internal.handlers.JDTLanguageServer.lambda$24(JDTLanguageServer.java:743)
at org.eclipse.jdt.ls.core.internal.handlers.JDTLanguageServer.lambda$26(JDTLanguageServer.java:793)
at java.util.concurrent.CompletableFuture.uniApply(CompletableFuture.java:602)
at java.util.concurrent.CompletableFuture$UniApply.tryFire(CompletableFuture.java:577)
at java.util.concurrent.CompletableFuture$Completion.exec(CompletableFuture.java:443)
at java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:289)
at java.util.concurrent.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1056)
at java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1692)
at java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:157)
[Error - 14:16:36] 11-Jan-2019 14:16:36 Failed to build workspace.
Errors occurred during the build.
org.eclipse.core.internal.resources.ResourceException: Errors occurred during the build.
at org.eclipse.core.internal.resources.Workspace.buildInternal(Workspace.java:520)
at org.eclipse.core.internal.resources.Workspace.build(Workspace.java:404)
at org.eclipse.jdt.ls.core.internal.handlers.BuildWorkspaceHandler.buildWorkspace(BuildWorkspaceHandler.java:65)
at org.eclipse.jdt.ls.core.internal.handlers.JDTLanguageServer.lambda$24(JDTLanguageServer.java:743)
at org.eclipse.jdt.ls.core.internal.handlers.JDTLanguageServer.lambda$26(JDTLanguageServer.java:793)
at java.util.concurrent.CompletableFuture.uniApply(CompletableFuture.java:602)
at java.util.concurrent.CompletableFuture$UniApply.tryFire(CompletableFuture.java:577)
at java.util.concurrent.CompletableFuture$Completion.exec(CompletableFuture.java:443)
at java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:289)
at java.util.concurrent.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1056)
at java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1692)
at java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:157)
Contains: Errors running builder 'Java Builder' on project 'api'.
org.apache.velocity.exception.VelocityException: The specified class for ResourceManager (org.apache.velocity.runtime.resource.ResourceManagerImpl) does not implement org.apache.velocity.runtime.resource.ResourceManager; Velocity is not initialized correctly.
at org.apache.velocity.runtime.RuntimeInstance.initializeResourceManager(RuntimeInstance.java:725)
at org.apache.velocity.runtime.RuntimeInstance.init(RuntimeInstance.java:263)
at org.apache.velocity.app.VelocityEngine.init(VelocityEngine.java:93)
at io.sundr.codegen.generator.CodeGeneratorContext.<init>(CodeGeneratorContext.java:42)
at io.sundr.codegen.generator.CodeGeneratorContext.<init>(CodeGeneratorContext.java:33)
at io.sundr.codegen.processor.JavaGeneratingProcessor.<init>(JavaGeneratingProcessor.java:30)
at io.sundr.builder.internal.processor.AbstractBuilderProcessor.<init>(AbstractBuilderProcessor.java:55)
at io.sundr.builder.internal.processor.BuildableProcessor.<init>(BuildableProcessor.java:48)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
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.jdt.apt.core.internal.ClassServiceFactory.newInstance(ClassServiceFactory.java:30)
at org.eclipse.jdt.internal.apt.pluggable.core.dispatch.IdeAnnotationProcessorManager.discoverNextProcessor(IdeAnnotationProcessorManager.java:96)
at org.eclipse.jdt.internal.compiler.apt.dispatch.RoundDispatcher.round(RoundDispatcher.java:119)
at org.eclipse.jdt.internal.compiler.apt.dispatch.BaseAnnotationProcessorManager.processAnnotations(BaseAnnotationProcessorManager.java:171)
at org.eclipse.jdt.internal.apt.pluggable.core.dispatch.IdeAnnotationProcessorManager.processAnnotations(IdeAnnotationProcessorManager.java:138)
at org.eclipse.jdt.internal.compiler.Compiler.processAnnotations(Compiler.java:940)
at org.eclipse.jdt.internal.compiler.Compiler.compile(Compiler.java:450)
at org.eclipse.jdt.internal.compiler.Compiler.compile(Compiler.java:426)
at org.eclipse.jdt.internal.core.builder.AbstractImageBuilder.compile(AbstractImageBuilder.java:386)
at org.eclipse.jdt.internal.core.builder.BatchImageBuilder.compile(BatchImageBuilder.java:214)
at org.eclipse.jdt.internal.core.builder.AbstractImageBuilder.compile(AbstractImageBuilder.java:318)
at org.eclipse.jdt.internal.core.builder.BatchImageBuilder.build(BatchImageBuilder.java:79)
at org.eclipse.jdt.internal.core.builder.JavaBuilder.buildAll(JavaBuilder.java:264)
at org.eclipse.jdt.internal.core.builder.JavaBuilder.build(JavaBuilder.java:182)
at org.eclipse.core.internal.events.BuildManager$2.run(BuildManager.java:833)
at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:45)
at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:220)
at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:263)
at org.eclipse.core.internal.events.BuildManager$1.run(BuildManager.java:316)
at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:45)
at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:319)
at org.eclipse.core.internal.events.BuildManager.basicBuildLoop(BuildManager.java:371)
at org.eclipse.core.internal.events.BuildManager.build(BuildManager.java:392)
at org.eclipse.core.internal.resources.Workspace.buildInternal(Workspace.java:504)
at org.eclipse.core.internal.resources.Workspace.build(Workspace.java:404)
at org.eclipse.jdt.ls.core.internal.handlers.BuildWorkspaceHandler.buildWorkspace(BuildWorkspaceHandler.java:65)
at org.eclipse.jdt.ls.core.internal.handlers.JDTLanguageServer.lambda$24(JDTLanguageServer.java:743)
at org.eclipse.jdt.ls.core.internal.handlers.JDTLanguageServer.lambda$26(JDTLanguageServer.java:793)
at java.util.concurrent.CompletableFuture.uniApply(CompletableFuture.java:602)
at java.util.concurrent.CompletableFuture$UniApply.tryFire(CompletableFuture.java:577)
at java.util.concurrent.CompletableFuture$Completion.exec(CompletableFuture.java:443)
at java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:289)
at java.util.concurrent.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1056)
at java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1692)
at java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:157)
[Error - 14:16:37] 11-Jan-2019 14:16:37 Problems occurred when invoking code from plug-in: "org.eclipse.core.resources".
The specified class for ResourceManager (org.apache.velocity.runtime.resource.ResourceManagerImpl) does not implement org.apache.velocity.runtime.resource.ResourceManager; Velocity is not initialized correctly.
org.apache.velocity.exception.VelocityException: The specified class for ResourceManager (org.apache.velocity.runtime.resource.ResourceManagerImpl) does not implement org.apache.velocity.runtime.resource.ResourceManager; Velocity is not initialized correctly.
at org.apache.velocity.runtime.RuntimeInstance.initializeResourceManager(RuntimeInstance.java:725)
at org.apache.velocity.runtime.RuntimeInstance.init(RuntimeInstance.java:263)
at org.apache.velocity.app.VelocityEngine.init(VelocityEngine.java:93)
at io.sundr.codegen.generator.CodeGeneratorContext.<init>(CodeGeneratorContext.java:42)
at io.sundr.codegen.generator.CodeGeneratorContext.<init>(CodeGeneratorContext.java:33)
at io.sundr.codegen.processor.JavaGeneratingProcessor.<init>(JavaGeneratingProcessor.java:30)
at io.sundr.builder.internal.processor.AbstractBuilderProcessor.<init>(AbstractBuilderProcessor.java:55)
at io.sundr.builder.internal.processor.BuildableProcessor.<init>(BuildableProcessor.java:48)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
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.jdt.apt.core.internal.ClassServiceFactory.newInstance(ClassServiceFactory.java:30)
at org.eclipse.jdt.internal.apt.pluggable.core.dispatch.IdeAnnotationProcessorManager.discoverNextProcessor(IdeAnnotationProcessorManager.java:96)
at org.eclipse.jdt.internal.compiler.apt.dispatch.RoundDispatcher.round(RoundDispatcher.java:119)
at org.eclipse.jdt.internal.compiler.apt.dispatch.BaseAnnotationProcessorManager.processAnnotations(BaseAnnotationProcessorManager.java:171)
at org.eclipse.jdt.internal.apt.pluggable.core.dispatch.IdeAnnotationProcessorManager.processAnnotations(IdeAnnotationProcessorManager.java:138)
at org.eclipse.jdt.internal.compiler.Compiler.processAnnotations(Compiler.java:940)
at org.eclipse.jdt.internal.compiler.Compiler.compile(Compiler.java:450)
at org.eclipse.jdt.internal.compiler.Compiler.compile(Compiler.java:426)
at org.eclipse.jdt.internal.core.builder.AbstractImageBuilder.compile(AbstractImageBuilder.java:386)
at org.eclipse.jdt.internal.core.builder.BatchImageBuilder.compile(BatchImageBuilder.java:214)
at org.eclipse.jdt.internal.core.builder.AbstractImageBuilder.compile(AbstractImageBuilder.java:318)
at org.eclipse.jdt.internal.core.builder.BatchImageBuilder.build(BatchImageBuilder.java:79)
at org.eclipse.jdt.internal.core.builder.JavaBuilder.buildAll(JavaBuilder.java:264)
at org.eclipse.jdt.internal.core.builder.JavaBuilder.build(JavaBuilder.java:187)
at org.eclipse.core.internal.events.BuildManager$2.run(BuildManager.java:833)
at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:45)
at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:220)
at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:263)
at org.eclipse.core.internal.events.BuildManager$1.run(BuildManager.java:316)
at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:45)
at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:319)
at org.eclipse.core.internal.events.BuildManager.basicBuildLoop(BuildManager.java:371)
at org.eclipse.core.internal.events.BuildManager.build(BuildManager.java:392)
at org.eclipse.core.internal.events.AutoBuildJob.doBuild(AutoBuildJob.java:154)
at org.eclipse.core.internal.events.AutoBuildJob.run(AutoBuildJob.java:244)
at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63)
[Error - 14:16:37] 11-Jan-2019 14:16:37 Errors occurred during the build.
Expected Result
Building the project without errors.