Sonar static analysis on mulesoft CI failing with unable to run checks

[ERROR] Unable to run check class com.mulesoft.connectors.tooling.sonar.checks.java.m4.operation.OptionalDefaultValueOnContentParamsCheck - primary-content-should-default-to-payload on file 'src/main/java/com/mule/extension/xxxxxx/api/util/XmlHelpers.java', To help improve the SonarSource Java Analyzer, please report this problem to SonarSource: see https://community.sonarsource.com/
java.lang.NullPointerException: null
	at com.mulesoft.connectors.tooling.sonar.checks.java.m4.operation.OptionalDefaultValueOnContentParamsCheck.visitMethod(OptionalDefaultValueOnContentParamsCheck.java:50)
	at org.sonar.java.model.declaration.MethodTreeImpl.accept(MethodTreeImpl.java:222)
	at org.sonar.plugins.java.api.tree.BaseTreeVisitor.scan(BaseTreeVisitor.java:40)
	at org.sonar.plugins.java.api.tree.BaseTreeVisitor.scan(BaseTreeVisitor.java:34)
	at org.sonar.plugins.java.api.tree.BaseTreeVisitor.visitClass(BaseTreeVisitor.java:68)
	at org.sonar.java.model.declaration.ClassTreeImpl.accept(ClassTreeImpl.java:220)
	at org.sonar.plugins.java.api.tree.BaseTreeVisitor.scan(BaseTreeVisitor.java:40)
	at org.sonar.plugins.java.api.tree.BaseTreeVisitor.visitNewClass(BaseTreeVisitor.java:249)
	at org.sonar.java.model.expression.NewClassTreeImpl.accept(NewClassTreeImpl.java:119)
	at org.sonar.plugins.java.api.tree.BaseTreeVisitor.scan(BaseTreeVisitor.java:40)
	at org.sonar.plugins.java.api.tree.BaseTreeVisitor.visitVariable(BaseTreeVisitor.java:309)
	at com.mulesoft.connectors.tooling.sonar.checks.java.m4.operation.OptionalDefaultValueOnContentParamsCheck.visitVariable(OptionalDefaultValueOnContentParamsCheck.java:66)
	at org.sonar.java.model.declaration.VariableTreeImpl.accept(VariableTreeImpl.java:144)
	at org.sonar.plugins.java.api.tree.BaseTreeVisitor.scan(BaseTreeVisitor.java:40)
	at org.sonar.plugins.java.api.tree.BaseTreeVisitor.scan(BaseTreeVisitor.java:34)
	at org.sonar.plugins.java.api.tree.BaseTreeVisitor.visitClass(BaseTreeVisitor.java:68)
	at org.sonar.java.model.declaration.ClassTreeImpl.accept(ClassTreeImpl.java:220)
	at org.sonar.plugins.java.api.tree.BaseTreeVisitor.scan(BaseTreeVisitor.java:40)
	at org.sonar.plugins.java.api.tree.BaseTreeVisitor.scan(BaseTreeVisitor.java:34)
	at org.sonar.plugins.java.api.tree.BaseTreeVisitor.visitCompilationUnit(BaseTreeVisitor.java:52)
	at org.sonar.java.model.JavaTree$CompilationUnitTreeImpl.accept(JavaTree.java:185)
	at org.sonar.plugins.java.api.tree.BaseTreeVisitor.scan(BaseTreeVisitor.java:40)
	at com.mulesoft.connectors.tooling.sonar.checks.java.BaseLoggingVisitor.scanFile(BaseLoggingVisitor.java:17)
	at org.sonar.java.model.VisitorsBridge.lambda$runScanner$0(VisitorsBridge.java:154)
	at org.sonar.java.model.VisitorsBridge.runScanner(VisitorsBridge.java:159)
	at org.sonar.java.model.VisitorsBridge.runScanner(VisitorsBridge.java:154)
	at org.sonar.java.model.VisitorsBridge.visitFile(VisitorsBridge.java:128)
	at org.sonar.java.ast.JavaAstScanner.simpleScan(JavaAstScanner.java:127)
	at org.sonar.java.ast.JavaAstScanner.scan(JavaAstScanner.java:79)
	at org.sonar.java.JavaSquid.scanSources(JavaSquid.java:130)
	at org.sonar.java.JavaSquid.scan(JavaSquid.java:116)
	at org.sonar.plugins.java.JavaSquidSensor.execute(JavaSquidSensor.java:105)
	at org.sonar.scanner.sensor.AbstractSensorWrapper.analyse(AbstractSensorWrapper.java:48)
	at org.sonar.scanner.sensor.ModuleSensorsExecutor.execute(ModuleSensorsExecutor.java:85)
	at org.sonar.scanner.sensor.ModuleSensorsExecutor.lambda$execute$1(ModuleSensorsExecutor.java:59)
	at org.sonar.scanner.sensor.ModuleSensorsExecutor.withModuleStrategy(ModuleSensorsExecutor.java:77)
	at org.sonar.scanner.sensor.ModuleSensorsExecutor.execute(ModuleSensorsExecutor.java:59)
	at org.sonar.scanner.scan.ModuleScanContainer.doAfterStart(ModuleScanContainer.java:82)
	at org.sonar.core.platform.ComponentContainer.startComponents(ComponentContainer.java:137)
	at org.sonar.core.platform.ComponentContainer.execute(ComponentContainer.java:123)
	at org.sonar.scanner.scan.ProjectScanContainer.scan(ProjectScanContainer.java:392)
	at org.sonar.scanner.scan.ProjectScanContainer.scanRecursively(ProjectScanContainer.java:388)
	at org.sonar.scanner.scan.ProjectScanContainer.doAfterStart(ProjectScanContainer.java:357)
	at org.sonar.core.platform.ComponentContainer.startComponents(ComponentContainer.java:137)
	at org.sonar.core.platform.ComponentContainer.execute(ComponentContainer.java:123)
	at org.sonar.scanner.bootstrap.GlobalContainer.doAfterStart(GlobalContainer.java:150)
	at org.sonar.core.platform.ComponentContainer.startComponents(ComponentContainer.java:137)
	at org.sonar.core.platform.ComponentContainer.execute(ComponentContainer.java:123)
	at org.sonar.batch.bootstrapper.Batch.doExecute(Batch.java:72)
	at org.sonar.batch.bootstrapper.Batch.execute(Batch.java:66)
	at org.sonarsource.scanner.api.internal.batch.BatchIsolatedLauncher.execute(BatchIsolatedLauncher.java:46)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at org.sonarsource.scanner.api.internal.IsolatedLauncherProxy.invoke(IsolatedLauncherProxy.java:60)
	at com.sun.proxy.$Proxy27.execute(Unknown Source)
	at org.sonarsource.scanner.api.EmbeddedScanner.doExecute(EmbeddedScanner.java:189)
	at org.sonarsource.scanner.api.EmbeddedScanner.execute(EmbeddedScanner.java:138)
	at org.sonarsource.scanner.maven.bootstrap.ScannerBootstrapper.execute(ScannerBootstrapper.java:65)
	at org.sonarsource.scanner.maven.SonarQubeMojo.execute(SonarQubeMojo.java:104)
	at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:137)
	at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:210)
	at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:156)
	at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:148)
	at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:117)
	at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:81)
	at org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build(SingleThreadedBuilder.java:56)
	at org.apache.maven.lifecycle.internal.LifecycleStarter.execute(LifecycleStarter.java:128)
	at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:305)
	at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:192)
	at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:105)
	at org.apache.maven.cli.MavenCli.execute(MavenCli.java:956)
	at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:288)
	at org.apache.maven.cli.MavenCli.main(MavenCli.java:192)
	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.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced(Launcher.java:282)
	at org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:225)
	at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode(Launcher.java:406)
	at org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:347)

Hey there.

You’ll have to raise an issue with the maintainer at GitHub - mulesoft-catalyst/mule-sonarqube-plugin: The Mule SonarQube Plugin provides the capability to do code inspecting and taking project metrics from a mule project using SonarQube.