catalina out

 ERROR [solr.tracker.AbstractTracker] [SolrTrackerScheduler_Worker-1] Tracking failed
 org.alfresco.error.AlfrescoRuntimeException: 08020030 GetModelsDiff return status is 404
        at org.alfresco.solr.client.SOLRAPIClient.getModelsDiff(SOLRAPIClient.java:1091)
        at org.alfresco.solr.tracker.ModelTracker.trackModelsImpl(ModelTracker.java:249)
        at org.alfresco.solr.tracker.ModelTracker.trackModels(ModelTracker.java:207)
        at org.alfresco.solr.tracker.ModelTracker.doTrack(ModelTracker.java:167)
        at org.alfresco.solr.tracker.AbstractTracker.track(AbstractTracker.java:153)
        at org.alfresco.solr.tracker.TrackerJob.execute(TrackerJob.java:47)
        at org.quartz.core.JobRunShell.run(JobRunShell.java:216)
        at org.quartz.simpl.SimpleThreadPool$WorkerThread.run(SimpleThreadPool.java:563)