I am using sonarqube version 6.7.6 and i am getting below error .even thoe my sonar analysis is successful , it says "Project is not analyzed yet." on UI

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

Hi,

Is there more to this error?

FYI, there are two steps to analysis. The first step scans your project and produces an analysis report. The second step processes that report server-side. Both steps must succeed for your project to be “analyzed”, but in your case the second is failing, which is why you have an apparently successful analysis and the message that the project has not yet been analyzed.

 
Ann

So what is the solution for it please