Empty project scan with only duplications

java.lang.IllegalStateException: Unrecoverable indexation failures: 1 errors among 1 requests
at org.sonar.server.es.IndexingListener$1.onFinish(IndexingListener.java:39)
at org.sonar.server.es.BulkIndexer.stop(BulkIndexer.java:122)
at org.sonar.server.measure.index.ProjectMeasuresIndexer.doIndex(ProjectMeasuresIndexer.java:158)
at org.sonar.server.measure.index.ProjectMeasuresIndexer.indexOnAnalysis(ProjectMeasuresIndexer.java:82)
at org.sonar.ce.task.projectanalysis.step.IndexAnalysisStep.execute(IndexAnalysisStep.java:45)
at org.sonar.ce.task.step.ComputationStepExecutor.executeStep(ComputationStepExecutor.java:81)
at org.sonar.ce.task.step.ComputationStepExecutor.executeSteps(ComputationStepExecutor.java:72)
at org.sonar.ce.task.step.ComputationStepExecutor.execute(ComputationStepExecutor.java:59)
at org.sonar.ce.task.projectanalysis.taskprocessor.ReportTaskProcessor.process(ReportTaskProcessor.java:81)
at org.sonar.ce.taskprocessor.CeWorkerImpl$ExecuteTask.executeTask(CeWorkerImpl.java:209)
at org.sonar.ce.taskprocessor.CeWorkerImpl$ExecuteTask.run(CeWorkerImpl.java:191)
at org.sonar.ce.taskprocessor.CeWorkerImpl.findAndProcessTask(CeWorkerImpl.java:158)
at org.sonar.ce.taskprocessor.CeWorkerImpl$TrackRunningState.get(CeWorkerImpl.java:133)
at org.sonar.ce.taskprocessor.CeWorkerImpl.call(CeWorkerImpl.java:85)
at org.sonar.ce.taskprocessor.CeWorkerImpl.call(CeWorkerImpl.java:53)
at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515)
at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
at java.base/java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:304)
at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
at java.base/java.lang.Thread.run(Thread.java:835)