Petals SE XSLT

sample-0 2018/04/16 14:40:11,604 GMT+0200 WARNING [Petals.Container.Components.petals-se-xslt] : Failed to undeploy the Service Unit 'su-xslt-provide-xalan-customfunction-5.2.0-SNAPSHOT' during revert from failed deploy
java.lang.NullPointerException
	at org.ow2.petals.se.xslt.XsltSuManager.doUndeploy(XsltSuManager.java:271)
	at org.ow2.petals.component.framework.su.AbstractServiceUnitManager.deploy(AbstractServiceUnitManager.java:167)
	at org.ow2.petals.microkernel.jbi.management.task.deployment.deploy.DeploySUToComponentTask.deploySUtoComponent(DeploySUToComponentTask.java:119)
	at org.ow2.petals.microkernel.jbi.management.task.deployment.deploy.DeploySUToComponentTask.execute(DeploySUToComponentTask.java:73)
	at org.ow2.petals.microkernel.api.jbi.management.TaskProcessor.process(TaskProcessor.java:73)
	at org.ow2.petals.microkernel.jbi.management.task.deployment.deploy.DeployAllSUTask.registerAndDeploySU(DeployAllSUTask.java:156)
	at org.ow2.petals.microkernel.jbi.management.task.deployment.deploy.DeployAllSUTask.deploySUS(DeployAllSUTask.java:119)
	at org.ow2.petals.microkernel.jbi.management.task.deployment.deploy.DeployAllSUTask.execute(DeployAllSUTask.java:78)
	at org.ow2.petals.microkernel.api.jbi.management.TaskProcessor.process(TaskProcessor.java:73)
	at org.ow2.petals.microkernel.jbi.management.deployment.DeploymentServiceImpl.deploy(DeploymentServiceImpl.java:166)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
        ...