Caused by: java.lang.ClassCastException: org.ametys.plugins.explorer.resources.jcr.JCRResource cannot be cast to org.ametys.cms.repository.Content
	at org.ametys.cms.lock.UnlockGenerator._saxLockedObjects(UnlockGenerator.java:112)
	at org.ametys.cms.lock.UnlockGenerator.generate(UnlockGenerator.java:70)
	at org.apache.cocoon.components.pipeline.AbstractProcessingPipeline.processXMLPipeline(AbstractProcessingPipeline.java:581)
	... 71 more