After upgrade from 7.0.56-3+deb8u7 to 7.0.56-3+deb8u8 Alfresco Solr doesn't work:
00:27:00,104 ERROR [org.alfresco.solr.tracker.AbstractTracker] Tracking failed org.alfresco.error.AlfrescoRuntimeException: 01160004 api/solr/aclchangesets return status:400 at org.alfresco.solr.client.SOLRAPIClient.getAclChangeSets(SOLRAPIClient.java:159) at org.alfresco.solr.tracker.AclTracker.getSomeAclChangeSets(AclTracker.java:436) at org.alfresco.solr.tracker.AclTracker.trackAclChangeSets(AclTracker.java:654) at org.alfresco.solr.tracker.AclTracker.trackRepository(AclTracker.java:316) at org.alfresco.solr.tracker.AclTracker.doTrack(AclTracker.java:104) at org.alfresco.solr.tracker.AbstractTracker.track(AbstractTracker.java:152) at org.alfresco.solr.tracker.TrackerJob.execute(TrackerJob.java:47) at org.quartz.core.JobRunShell.run(JobRunShell.java:216) at org.quartz.simpl.SimpleThreadPool$WorkerThread.run(SimpleThreadPool.java:563) 00:32:00,113 ERROR [org.alfresco.solr.tracker.AbstractTracker] Tracking failed org.alfresco.error.AlfrescoRuntimeException: 01160005 api/solr/aclchangesets return status:400 at org.alfresco.solr.client.SOLRAPIClient.getAclChangeSets(SOLRAPIClient.java:159) at org.alfresco.solr.tracker.AclTracker.getSomeAclChangeSets(AclTracker.java:436) at org.alfresco.solr.tracker.AclTracker.trackAclChangeSets(AclTracker.java:654) at org.alfresco.solr.tracker.AclTracker.trackRepository(AclTracker.java:316) at org.alfresco.solr.tracker.AclTracker.doTrack(AclTracker.java:104) at org.alfresco.solr.tracker.AbstractTracker.track(AbstractTracker.java:152) at org.alfresco.solr.tracker.TrackerJob.execute(TrackerJob.java:47) at org.quartz.core.JobRunShell.run(JobRunShell.java:216) at org.quartz.simpl.SimpleThreadPool$WorkerThread.run(SimpleThreadPool.java:563)