com.puppycrawl.tools.checkstyle.api.CheckstyleException: missing key 'severity' in SuppressionCommentFilter

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com.puppycrawl.tools.checkstyle.api.CheckstyleException: missing key 'severity' in SuppressionCommentFilter	at com.puppycrawl.tools.checkstyle.DefaultConfiguration.getAttribute(DefaultConfiguration.java:68)	at com.puppycrawl.tools.checkstyle.ConfigurationLoader$InternalLoader.endElement(ConfigurationLoader.java:481)	at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.endElement(AbstractSAXParser.java:609)	at com.sun.org.apache.xerces.internal.parsers.AbstractXMLDocumentParser.emptyElement(AbstractXMLDocumentParser.java:183)	at com.sun.org.apache.xerces.internal.impl.dtd.XMLDTDValidator.emptyElement(XMLDTDValidator.java:766)	at com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl.scanStartElement(XMLNSDocumentScannerImpl.java:357)	at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl$FragmentContentDriver.next(XMLDocumentFragmentScannerImpl.java:2781)	at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.next(XMLDocumentScannerImpl.java:606)	at com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl.next(XMLNSDocumentScannerImpl.java:118)	at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(XMLDocumentFragmentScannerImpl.java:504)	at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:848)	at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:777)	at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(XMLParser.java:141)	at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(AbstractSAXParser.java:1213)	at com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl$JAXPSAXParser.parse(SAXParserImpl.java:643)	at com.puppycrawl.tools.checkstyle.api.AbstractLoader.parseInputSource(AbstractLoader.java:99)	at com.puppycrawl.tools.checkstyle.ConfigurationLoader.parseInputSource(ConfigurationLoader.java:151)	at com.puppycrawl.tools.checkstyle.ConfigurationLoader.loadConfiguration(ConfigurationLoader.java:230)	at com.puppycrawl.tools.checkstyle.ConfigurationLoader.loadConfiguration(ConfigurationLoader.java:182)	at com.puppycrawl.tools.checkstyle.ConfigurationLoader.loadConfiguration(ConfigurationLoader.java:163)	at org.sonar.plugins.checkstyle.CheckstyleConfiguration.toCheckstyleConfiguration(CheckstyleConfiguration.java:107)	at org.sonar.plugins.checkstyle.CheckstyleConfiguration.getCheckstyleConfiguration(CheckstyleConfiguration.java:101)	at org.sonar.plugins.checkstyle.CheckstyleExecutor.execute(CheckstyleExecutor.java:86)	at org.sonar.plugins.checkstyle.CheckstyleSensor.analyse(CheckstyleSensor.java:57)	at org.sonar.batch.phases.SensorsExecutor.executeSensor(SensorsExecutor.java:58)	at org.sonar.batch.phases.SensorsExecutor.execute(SensorsExecutor.java:50)	at org.sonar.batch.phases.AbstractPhaseExecutor.execute(AbstractPhaseExecutor.java:83)	at org.sonar.batch.scan.ModuleScanContainer.doAfterStart(ModuleScanContainer.java:192)	at org.sonar.core.platform.ComponentContainer.startComponents(ComponentContainer.java:142)	at org.sonar.core.platform.ComponentContainer.execute(ComponentContainer.java:127)	at org.sonar.batch.scan.ProjectScanContainer.scan(ProjectScanContainer.java:241)	at org.sonar.batch.scan.ProjectScanContainer.scanRecursively(ProjectScanContainer.java:236)	at org.sonar.batch.scan.ProjectScanContainer.doAfterStart(ProjectScanContainer.java:226)	at org.sonar.core.platform.ComponentContainer.startComponents(ComponentContainer.java:142)	at org.sonar.core.platform.ComponentContainer.execute(ComponentContainer.java:127)	at org.sonar.batch.task.ScanTask.execute(ScanTask.java:47)	at org.sonar.batch.task.TaskContainer.doAfterStart(TaskContainer.java:86)	at org.sonar.core.platform.ComponentContainer.startComponents(ComponentContainer.java:142)	at org.sonar.core.platform.ComponentContainer.execute(ComponentContainer.java:127)	at org.sonar.batch.bootstrap.GlobalContainer.executeTask(GlobalContainer.java:106)	at org.sonar.batch.bootstrapper.Batch.executeTask(Batch.java:119)	at org.sonarsource.scanner.api.internal.batch.BatchIsolatedLauncher.execute(BatchIsolatedLauncher.java:62)	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.$Proxy0.execute(Unknown Source)	at org.sonarsource.scanner.api.EmbeddedScanner.doExecute(EmbeddedScanner.java:240)	at org.sonarsource.scanner.api.EmbeddedScanner.runAnalysis(EmbeddedScanner.java:151)	at org.sonarsource.scanner.cli.Main.runAnalysis(Main.java:110)	at org.sonarsource.scanner.cli.Main.execute(Main.java:72)	at org.sonarsource.scanner.cli.Main.main(Main.java:60)