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java.lang.NullPointerException: 	at com.google.errorprone.bugpatterns.threadsafety.GuardedByBinder$2.normalizeBase(GuardedByBinder.java:297)	at com.google.errorprone.bugpatterns.threadsafety.GuardedByBinder$2.visitMethodInvocation(GuardedByBinder.java:195)	at com.google.errorprone.bugpatterns.threadsafety.GuardedByBinder$2.visitMethodInvocation(GuardedByBinder.java:173)	at com.sun.tools.javac.tree.JCTree$JCMethodInvocation.accept(JCTree.java:1614)	at com.sun.source.util.SimpleTreeVisitor.visit(SimpleTreeVisitor.java:81)	at com.google.errorprone.bugpatterns.threadsafety.GuardedByBinder$2.visitMethodInvocation(GuardedByBinder.java:191)	at com.google.errorprone.bugpatterns.threadsafety.GuardedByBinder$2.visitMethodInvocation(GuardedByBinder.java:173)	at com.sun.tools.javac.tree.JCTree$JCMethodInvocation.accept(JCTree.java:1614)	at com.sun.source.util.SimpleTreeVisitor.visit(SimpleTreeVisitor.java:81)	at com.google.errorprone.bugpatterns.threadsafety.GuardedByBinder.bind(GuardedByBinder.java:105)	at com.google.errorprone.bugpatterns.threadsafety.GuardedByBinder.bindString(GuardedByBinder.java:73)	at com.google.errorprone.bugpatterns.threadsafety.GuardedByUtils.isGuardedByValid(GuardedByUtils.java:93)	at com.google.errorprone.bugpatterns.threadsafety.GuardedByValidator.validate(GuardedByValidator.java:72)	at com.google.errorprone.bugpatterns.threadsafety.GuardedByValidator.matchVariable(GuardedByValidator.java:68)	at com.google.errorprone.scanner.ErrorProneScanner.visitVariable(ErrorProneScanner.java:1005)	at com.google.errorprone.scanner.ErrorProneScanner.visitVariable(ErrorProneScanner.java:146)	at com.sun.tools.javac.tree.JCTree$JCVariableDecl.accept(JCTree.java:938)	at com.sun.source.util.TreePathScanner.scan(TreePathScanner.java:72)	at com.google.errorprone.scanner.Scanner.scan(Scanner.java:91)	at com.google.errorprone.scanner.ErrorProneScanner.scan(ErrorProneScanner.java:1050)	at com.google.errorprone.scanner.ErrorProneScanner.scan(ErrorProneScanner.java:146)	at com.sun.source.util.TreeScanner.scanAndReduce(TreeScanner.java:91)	at com.sun.source.util.TreeScanner.scan(TreeScanner.java:106)	at com.sun.source.util.TreeScanner.scanAndReduce(TreeScanner.java:114)	at com.sun.source.util.TreeScanner.visitClass(TreeScanner.java:188)	at com.google.errorprone.scanner.ErrorProneScanner.visitClass(ErrorProneScanner.java:590)	at com.google.errorprone.scanner.ErrorProneScanner.visitClass(ErrorProneScanner.java:146)	at com.sun.tools.javac.tree.JCTree$JCClassDecl.accept(JCTree.java:778)	at com.sun.source.util.TreePathScanner.scan(TreePathScanner.java:72)	at com.google.errorprone.scanner.Scanner.scan(Scanner.java:91)	at com.google.errorprone.scanner.ErrorProneScanner.scan(ErrorProneScanner.java:1050)	at com.google.errorprone.scanner.ErrorProneScanner.scan(ErrorProneScanner.java:146)	at com.sun.source.util.TreeScanner.scan(TreeScanner.java:106)	at com.sun.source.util.TreeScanner.scanAndReduce(TreeScanner.java:114)	at com.sun.source.util.TreeScanner.visitCompilationUnit(TreeScanner.java:145)	at com.google.errorprone.scanner.ErrorProneScanner.visitCompilationUnit(ErrorProneScanner.java:601)	at com.google.errorprone.scanner.ErrorProneScanner.visitCompilationUnit(ErrorProneScanner.java:146)	at com.sun.tools.javac.tree.JCTree$JCCompilationUnit.accept(JCTree.java:561)	at com.sun.source.util.TreePathScanner.scan(TreePathScanner.java:53)	at com.google.errorprone.scanner.Scanner.scan(Scanner.java:70)	at com.google.errorprone.scanner.ErrorProneScanner.scan(ErrorProneScanner.java:1036)	at com.google.errorprone.scanner.ErrorProneScannerTransformer.apply(ErrorProneScannerTransformer.java:45)	at com.google.errorprone.ErrorProneAnalyzer.reportReadyForAnalysis(ErrorProneAnalyzer.java:172)	at com.google.errorprone.ErrorProneAnalyzer.finished(ErrorProneAnalyzer.java:115)	at com.google.errorprone.ErrorProneJavacJavaCompiler.postFlow(ErrorProneJavacJavaCompiler.java:109)	at com.google.errorprone.ErrorProneJavacJavaCompiler.flow(ErrorProneJavacJavaCompiler.java:93)	at com.sun.tools.javac.main.JavaCompiler.flow(JavaCompiler.java:1247)	at com.sun.tools.javac.main.JavaCompiler.compile(JavaCompiler.java:858)	at com.sun.tools.javac.main.Main.compile(Main.java:253)	at com.google.errorprone.ErrorProneCompiler.run(ErrorProneCompiler.java:253)	at com.google.errorprone.ErrorProneCompiler.run(ErrorProneCompiler.java:163)	at com.google.errorprone.ErrorProneCompiler.compile(ErrorProneCompiler.java:92)	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 net.ltgt.gradle.errorprone.ErrorProneCompiler.execute(ErrorProneCompiler.java:57)	at net.ltgt.gradle.errorprone.ErrorProneCompiler.execute(ErrorProneCompiler.java:25)	at org.gradle.api.internal.tasks.compile.NormalizingJavaCompiler.delegateAndHandleErrors(NormalizingJavaCompiler.java:101)	at org.gradle.api.internal.tasks.compile.NormalizingJavaCompiler.execute(NormalizingJavaCompiler.java:50)	at org.gradle.api.internal.tasks.compile.NormalizingJavaCompiler.execute(NormalizingJavaCompiler.java:36)	at org.gradle.api.internal.tasks.compile.CleaningJavaCompilerSupport.execute(CleaningJavaCompilerSupport.java:34)	at org.gradle.api.internal.tasks.compile.CleaningJavaCompilerSupport.execute(CleaningJavaCompilerSupport.java:25)	at org.gradle.api.tasks.compile.JavaCompile.performCompilation(JavaCompile.java:157)	at org.gradle.api.tasks.compile.JavaCompile.compile(JavaCompile.java:139)	at org.gradle.api.tasks.compile.JavaCompile.compile(JavaCompile.java:93)	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.reflect.JavaMethod.invoke(JavaMethod.java:75)	at org.gradle.api.internal.project.taskfactory.AnnotationProcessingTaskFactory$IncrementalTaskAction.doExecute(AnnotationProcessingTaskFactory.java:244)	at org.gradle.api.internal.project.taskfactory.AnnotationProcessingTaskFactory$StandardTaskAction.execute(AnnotationProcessingTaskFactory.java:220)	at org.gradle.api.internal.project.taskfactory.AnnotationProcessingTaskFactory$IncrementalTaskAction.execute(AnnotationProcessingTaskFactory.java:231)	at org.gradle.api.internal.project.taskfactory.AnnotationProcessingTaskFactory$StandardTaskAction.execute(AnnotationProcessingTaskFactory.java:209)	at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeAction(ExecuteActionsTaskExecuter.java:80)	at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeActions(ExecuteActionsTaskExecuter.java:61)	at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.execute(ExecuteActionsTaskExecuter.java:46)	at org.gradle.api.internal.tasks.execution.PostExecutionAnalysisTaskExecuter.execute(PostExecutionAnalysisTaskExecuter.java:35)	at org.gradle.api.internal.tasks.execution.SkipUpToDateTaskExecuter.execute(SkipUpToDateTaskExecuter.java:64)	at org.gradle.api.internal.tasks.execution.ValidatingTaskExecuter.execute(ValidatingTaskExecuter.java:58)	at org.gradle.api.internal.tasks.execution.SkipEmptySourceFilesTaskExecuter.execute(SkipEmptySourceFilesTaskExecuter.java:52)	at org.gradle.api.internal.tasks.execution.SkipTaskWithNoActionsExecuter.execute(SkipTaskWithNoActionsExecuter.java:52)	at org.gradle.api.internal.tasks.execution.SkipOnlyIfTaskExecuter.execute(SkipOnlyIfTaskExecuter.java:53)	at org.gradle.api.internal.tasks.execution.ExecuteAtMostOnceTaskExecuter.execute(ExecuteAtMostOnceTaskExecuter.java:43)	at org.gradle.execution.taskgraph.DefaultTaskGraphExecuter$EventFiringTaskWorker.execute(DefaultTaskGraphExecuter.java:203)	at org.gradle.execution.taskgraph.DefaultTaskGraphExecuter$EventFiringTaskWorker.execute(DefaultTaskGraphExecuter.java:185)	at org.gradle.execution.taskgraph.AbstractTaskPlanExecutor$TaskExecutorWorker.processTask(AbstractTaskPlanExecutor.java:66)	at org.gradle.execution.taskgraph.AbstractTaskPlanExecutor$TaskExecutorWorker.run(AbstractTaskPlanExecutor.java:50)	at org.gradle.execution.taskgraph.DefaultTaskPlanExecutor.process(DefaultTaskPlanExecutor.java:25)	at org.gradle.execution.taskgraph.DefaultTaskGraphExecuter.execute(DefaultTaskGraphExecuter.java:110)	at org.gradle.execution.SelectedTaskExecutionAction.execute(SelectedTaskExecutionAction.java:37)	at org.gradle.execution.DefaultBuildExecuter.execute(DefaultBuildExecuter.java:37)	at org.gradle.execution.DefaultBuildExecuter.access$000(DefaultBuildExecuter.java:23)	at org.gradle.execution.DefaultBuildExecuter$1.proceed(DefaultBuildExecuter.java:43)	at org.gradle.execution.DryRunBuildExecutionAction.execute(DryRunBuildExecutionAction.java:32)	at org.gradle.execution.DefaultBuildExecuter.execute(DefaultBuildExecuter.java:37)	at org.gradle.execution.DefaultBuildExecuter.execute(DefaultBuildExecuter.java:30)	at org.gradle.initialization.DefaultGradleLauncher$4.run(DefaultGradleLauncher.java:154)	at org.gradle.internal.Factories$1.create(Factories.java:22)	at org.gradle.internal.progress.DefaultBuildOperationExecutor.run(DefaultBuildOperationExecutor.java:90)	at org.gradle.internal.progress.DefaultBuildOperationExecutor.run(DefaultBuildOperationExecutor.java:52)	at org.gradle.initialization.DefaultGradleLauncher.doBuildStages(DefaultGradleLauncher.java:151)	at org.gradle.initialization.DefaultGradleLauncher.access$200(DefaultGradleLauncher.java:32)	at org.gradle.initialization.DefaultGradleLauncher$1.create(DefaultGradleLauncher.java:99)	at org.gradle.initialization.DefaultGradleLauncher$1.create(DefaultGradleLauncher.java:93)	at org.gradle.internal.progress.DefaultBuildOperationExecutor.run(DefaultBuildOperationExecutor.java:90)	at org.gradle.internal.progress.DefaultBuildOperationExecutor.run(DefaultBuildOperationExecutor.java:62)	at org.gradle.initialization.DefaultGradleLauncher.doBuild(DefaultGradleLauncher.java:93)	at org.gradle.initialization.DefaultGradleLauncher.run(DefaultGradleLauncher.java:82)	at org.gradle.launcher.exec.InProcessBuildActionExecuter$DefaultBuildController.run(InProcessBuildActionExecuter.java:94)	at org.gradle.tooling.internal.provider.ExecuteBuildActionRunner.run(ExecuteBuildActionRunner.java:28)	at org.gradle.launcher.exec.ChainingBuildActionRunner.run(ChainingBuildActionRunner.java:35)	at org.gradle.launcher.exec.InProcessBuildActionExecuter.execute(InProcessBuildActionExecuter.java:43)	at org.gradle.launcher.exec.InProcessBuildActionExecuter.execute(InProcessBuildActionExecuter.java:28)	at org.gradle.launcher.exec.ContinuousBuildActionExecuter.execute(ContinuousBuildActionExecuter.java:78)	at org.gradle.launcher.exec.ContinuousBuildActionExecuter.execute(ContinuousBuildActionExecuter.java:48)	at org.gradle.launcher.exec.DaemonUsageSuggestingBuildActionExecuter.execute(DaemonUsageSuggestingBuildActionExecuter.java:51)	at org.gradle.launcher.exec.DaemonUsageSuggestingBuildActionExecuter.execute(DaemonUsageSuggestingBuildActionExecuter.java:28)	at org.gradle.launcher.cli.RunBuildAction.run(RunBuildAction.java:43)	at org.gradle.internal.Actions$RunnableActionAdapter.execute(Actions.java:170)	at org.gradle.launcher.cli.CommandLineActionFactory$ParseAndBuildAction.execute(CommandLineActionFactory.java:237)	at org.gradle.launcher.cli.CommandLineActionFactory$ParseAndBuildAction.execute(CommandLineActionFactory.java:210)	at org.gradle.launcher.cli.JavaRuntimeValidationAction.execute(JavaRuntimeValidationAction.java:35)	at org.gradle.launcher.cli.JavaRuntimeValidationAction.execute(JavaRuntimeValidationAction.java:24)	at org.gradle.launcher.cli.CommandLineActionFactory$WithLogging.execute(CommandLineActionFactory.java:206)	at org.gradle.launcher.cli.CommandLineActionFactory$WithLogging.execute(CommandLineActionFactory.java:169)	at org.gradle.launcher.cli.ExceptionReportingAction.execute(ExceptionReportingAction.java:33)	at org.gradle.launcher.cli.ExceptionReportingAction.execute(ExceptionReportingAction.java:22)	at org.gradle.launcher.Main.doAction(Main.java:33)	at org.gradle.launcher.bootstrap.EntryPoint.run(EntryPoint.java:45)	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.launcher.bootstrap.ProcessBootstrap.runNoExit(ProcessBootstrap.java:54)	at org.gradle.launcher.bootstrap.ProcessBootstrap.run(ProcessBootstrap.java:35)	at org.gradle.launcher.GradleMain.main(GradleMain.java:23)	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.wrapper.BootstrapMainStarter.start(BootstrapMainStarter.java:30)	at org.gradle.wrapper.WrapperExecutor.execute(WrapperExecutor.java:129)	at org.gradle.wrapper.GradleWrapperMain.main(GradleWrapperMain.java:61)