Compiler NPE within CompileStack#clear

General error during instruction selection: NullPointerException while processing AbstractBoxProvisionService.groovy. /Users/davydotcom/projects/bertram/morpheus/morpheus-ui/grails-app/services/com/morpheus/provision/AbstractBoxProvisionService.groovy

groovy.lang.GroovyRuntimeException: NullPointerException while processing AbstractBoxProvisionService.groovy. /Users/davydotcom/projects/bertram/morpheus/morpheus-ui/grails-app/services/com/morpheus/provision/AbstractBoxProvisionService.groovy
        at org.codehaus.groovy.classgen.AsmClassGenerator.visitClass(AsmClassGenerator.java:295)
        at org.codehaus.groovy.control.CompilationUnit$3.call(CompilationUnit.java:797)
        at org.codehaus.groovy.control.CompilationUnit$IPrimaryClassNodeOperation.doPhaseOperation(CompilationUnit.java:942)
        at org.codehaus.groovy.control.CompilationUnit.processPhaseOperations(CompilationUnit.java:671)
        at org.codehaus.groovy.control.CompilationUnit.compile(CompilationUnit.java:635)
        at org.codehaus.groovy.control.CompilationUnit.compile(CompilationUnit.java:610)
        at org.gradle.api.internal.tasks.compile.ApiGroovyCompiler.execute(ApiGroovyCompiler.java:277)
        at org.gradle.api.internal.tasks.compile.ApiGroovyCompiler.execute(ApiGroovyCompiler.java:67)
        at org.gradle.api.internal.tasks.compile.GroovyCompilerFactory$DaemonSideCompiler.execute(GroovyCompilerFactory.java:98)
        at org.gradle.api.internal.tasks.compile.GroovyCompilerFactory$DaemonSideCompiler.execute(GroovyCompilerFactory.java:77)
        at org.gradle.api.internal.tasks.compile.daemon.AbstractDaemonCompiler$CompilerWorkAction.execute(AbstractDaemonCompiler.java:135)
        at org.gradle.workers.internal.DefaultWorkerServer.execute(DefaultWorkerServer.java:63)
        at org.gradle.workers.internal.AbstractClassLoaderWorker$1.create(AbstractClassLoaderWorker.java:49)
        at org.gradle.workers.internal.AbstractClassLoaderWorker$1.create(AbstractClassLoaderWorker.java:43)
        at org.gradle.internal.classloader.ClassLoaderUtils.executeInClassloader(ClassLoaderUtils.java:97)
        at org.gradle.workers.internal.AbstractClassLoaderWorker.executeInClassLoader(AbstractClassLoaderWorker.java:43)
        at org.gradle.workers.internal.IsolatedClassloaderWorker.run(IsolatedClassloaderWorker.java:49)
        at org.gradle.workers.internal.IsolatedClassloaderWorker.run(IsolatedClassloaderWorker.java:30)
        at org.gradle.workers.internal.WorkerDaemonServer.run(WorkerDaemonServer.java:85)
        at org.gradle.workers.internal.WorkerDaemonServer.run(WorkerDaemonServer.java:55)
        at org.gradle.process.internal.worker.request.WorkerAction$1.call(WorkerAction.java:138)
        at org.gradle.process.internal.worker.child.WorkerLogEventListener.withWorkerLoggingProtocol(WorkerLogEventListener.java:41)
        at org.gradle.process.internal.worker.request.WorkerAction.run(WorkerAction.java:135)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:498)
        at org.gradle.internal.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:36)
        at org.gradle.internal.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:24)
        at org.gradle.internal.remote.internal.hub.MessageHubBackedObjectConnection$DispatchWrapper.dispatch(MessageHubBackedObjectConnection.java:182)
        at org.gradle.internal.remote.internal.hub.MessageHubBackedObjectConnection$DispatchWrapper.dispatch(MessageHubBackedObjectConnection.java:164)
        at org.gradle.internal.remote.internal.hub.MessageHub$Handler.run(MessageHub.java:414)
        at org.gradle.internal.concurrent.ExecutorPolicy$CatchAndRecordFailures.onExecute(ExecutorPolicy.java:64)
        at org.gradle.internal.concurrent.ManagedExecutorImpl$1.run(ManagedExecutorImpl.java:48)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
        at org.gradle.internal.concurrent.ThreadFactoryImpl$ManagedThreadRunnable.run(ThreadFactoryImpl.java:56)
        at java.lang.Thread.run(Thread.java:748)
Caused by: java.lang.NullPointerException
        at groovyjarjarasm.asm.MethodWriter.visitLocalVariable(MethodWriter.java:1479)
        at org.codehaus.groovy.classgen.asm.CompileStack.clear(CompileStack.java:366)
        at org.codehaus.groovy.classgen.AsmClassGenerator.visitStdMethod(AsmClassGenerator.java:464)
        at org.codehaus.groovy.classgen.AsmClassGenerator.visitConstructorOrMethod(AsmClassGenerator.java:409)
        at org.codehaus.groovy.ast.ClassCodeVisitorSupport.visitMethod(ClassCodeVisitorSupport.java:106)
        at org.codehaus.groovy.classgen.AsmClassGenerator.visitMethod(AsmClassGenerator.java:557)
        at org.codehaus.groovy.ast.ClassNode.visitMethods(ClassNode.java:1099)
        at org.codehaus.groovy.ast.ClassNode.visitContents(ClassNode.java:1092)
        at org.codehaus.groovy.ast.ClassCodeVisitorSupport.visitClass(ClassCodeVisitorSupport.java:52)
        at org.codehaus.groovy.classgen.AsmClassGenerator.visitClass(AsmClassGenerator.java:272)
        ... 37 more