Hi,
We recently updated our project from AEM 6.1 to 6.3, when tried to install the ACL package in AEM 6.3 through package manager, got the below exception and all the pages throwing 404 error including siteadmin, useradmin etc.,
*ERROR* [sling-default-199-Registered Service.1917] org.apache.sling.commons.scheduler.impl.QuartzScheduler Exception during job execution of org.apache.sling.distribution.packaging.impl.ResourceDistributionPackageCleanup@30423ef0 : Can't create child on a synthetic root
java.lang.IllegalArgumentException: Can't create child on a synthetic root
at org.apache.sling.resourceresolver.impl.ResourceResolverImpl.create(ResourceResolverImpl.java:1156)
at org.apache.sling.api.resource.ResourceUtil.getOrCreateResourceInternal(ResourceUtil.java:656)
at org.apache.sling.api.resource.ResourceUtil.getOrCreateResource(ResourceUtil.java:593)
at org.apache.sling.api.resource.ResourceUtil.getOrCreateResource(ResourceUtil.java:561)
at org.apache.sling.api.resource.ResourceUtil.getOrCreateResourceInternal(ResourceUtil.java:644)
at org.apache.sling.api.resource.ResourceUtil.getOrCreateResource(ResourceUtil.java:593)
at org.apache.sling.api.resource.ResourceUtil.getOrCreateResource(ResourceUtil.java:561)
at org.apache.sling.api.resource.ResourceUtil.getOrCreateResourceInternal(ResourceUtil.java:644)
at org.apache.sling.api.resource.ResourceUtil.getOrCreateResource(ResourceUtil.java:593)
at org.apache.sling.api.resource.ResourceUtil.getOrCreateResource(ResourceUtil.java:561)
at org.apache.sling.api.resource.ResourceUtil.getOrCreateResourceInternal(ResourceUtil.java:644)
at org.apache.sling.api.resource.ResourceUtil.getOrCreateResource(ResourceUtil.java:593)
at org.apache.sling.api.resource.ResourceUtil.getOrCreateResource(ResourceUtil.java:561)
at org.apache.sling.api.resource.ResourceUtil.getOrCreateResourceInternal(ResourceUtil.java:644)
at org.apache.sling.api.resource.ResourceUtil.getOrCreateResource(ResourceUtil.java:593)
at org.apache.sling.api.resource.ResourceUtil.getOrCreateResource(ResourceUtil.java:561)
at org.apache.sling.api.resource.ResourceUtil.getOrCreateResourceInternal(ResourceUtil.java:644)
at org.apache.sling.api.resource.ResourceUtil.getOrCreateResource(ResourceUtil.java:593)
at org.apache.sling.api.resource.ResourceUtil.getOrCreateResource(ResourceUtil.java:561)
at org.apache.sling.distribution.packaging.impl.DistributionPackageUtils.getPackagesRoot(DistributionPackageUtils.java:282)
at org.apache.sling.distribution.packaging.impl.ResourceDistributionPackageBuilder.getPackages(ResourceDistributionPackageBuilder.java:245)
at org.apache.sling.distribution.packaging.impl.ResourceDistributionPackageCleanup.run(ResourceDistributionPackageCleanup.java:61)
at org.apache.sling.commons.scheduler.impl.QuartzJobExecutor.execute(QuartzJobExecutor.java:118)
at org.quartz.core.JobRunShell.run(JobRunShell.java:202)
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)
Thanks in advance !