My plugins are as follows in version(6.7.6)
sonar-cobertura-plugin-2.0.jar
sonar-html-plugin-3.0.1.1444.jar
sonar-scm-svn-plugin-1.6.0.860.jar
sonar-csharp-plugin-6.5.0.3766.jar
sonar-java-plugin-5.11.0.17289.jar
sonar-typescript-plugin-1.1.0.1079.jar
sonar-css-plugin-1.0.3.724.jar
sonar-javascript-plugin-3.2.0.5506.jar
sonar-xml-plugin-1.4.3.1027.jar
sonar-flex-plugin-2.3.jar
sonar-php-plugin-2.11.0.2485.jar
sonar-gitlab-plugin-3.0.2.jar
sonar-python-plugin-1.8.0.1496.jar
and the error details from project background tasks are as follows
Error Details
org.sonar.server.computation.task.projectanalysis.component.VisitException: Visit of Component {key=nsc:compute-engine-dev2,uuid=AWlRklf3U_iwUdpp6UF_,type=PROJECT} failed
at org.sonar.server.computation.task.projectanalysis.component.VisitException.rethrowOrWrap(VisitException.java:44)
at org.sonar.server.computation.task.projectanalysis.component.DepthTraversalTypeAwareCrawler.visit(DepthTraversalTypeAwareCrawler.java:41)
at org.sonar.server.computation.task.projectanalysis.step.QualityGateMeasuresStep.execute(QualityGateMeasuresStep.java:109)
at org.sonar.server.computation.task.step.ComputationStepExecutor.executeSteps(ComputationStepExecutor.java:64)
at org.sonar.server.computation.task.step.ComputationStepExecutor.execute(ComputationStepExecutor.java:52)
at org.sonar.server.computation.task.projectanalysis.taskprocessor.ReportTaskProcessor.process(ReportTaskProcessor.java:73)
at org.sonar.ce.taskprocessor.CeWorkerImpl.executeTask(CeWorkerImpl.java:134)
at org.sonar.ce.taskprocessor.CeWorkerImpl.findAndProcessTask(CeWorkerImpl.java:97)
at org.sonar.ce.taskprocessor.CeWorkerImpl.withCustomizedThreadName(CeWorkerImpl.java:81)
at org.sonar.ce.taskprocessor.CeWorkerImpl.call(CeWorkerImpl.java:73)
at org.sonar.ce.taskprocessor.CeWorkerImpl.call(CeWorkerImpl.java:43)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:180)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:293)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)
Caused by: java.lang.IllegalArgumentException: Quality Gate: Unable to parse value '10.0%' to compare against Duplicated Lines (%)
at org.sonar.server.computation.task.projectanalysis.qualitygate.ConditionEvaluator.evaluateCondition(ConditionEvaluator.java:62)
at org.sonar.server.computation.task.projectanalysis.qualitygate.ConditionEvaluator.evaluate(ConditionEvaluator.java:44)
at org.sonar.server.computation.task.projectanalysis.step.QualityGateMeasuresStep.evaluateQualityGate(QualityGateMeasuresStep.java:210)
at org.sonar.server.computation.task.projectanalysis.step.QualityGateMeasuresStep.updateMeasures(QualityGateMeasuresStep.java:185)
at org.sonar.server.computation.task.projectanalysis.step.QualityGateMeasuresStep.executeForProject(QualityGateMeasuresStep.java:116)
at org.sonar.server.computation.task.projectanalysis.step.QualityGateMeasuresStep.access$000(QualityGateMeasuresStep.java:76)
at org.sonar.server.computation.task.projectanalysis.step.QualityGateMeasuresStep$1.visitProject(QualityGateMeasuresStep.java:107)
at org.sonar.server.computation.task.projectanalysis.component.DepthTraversalTypeAwareCrawler.visitNode(DepthTraversalTypeAwareCrawler.java:70)
at org.sonar.server.computation.task.projectanalysis.component.DepthTraversalTypeAwareCrawler.visitImpl(DepthTraversalTypeAwareCrawler.java:51)
at org.sonar.server.computation.task.projectanalysis.component.DepthTraversalTypeAwareCrawler.visit(DepthTraversalTypeAwareCrawler.java:39)
... 17 more