Description: Trying to delete a non existing user, results in ClientResponseFailure: Error status 500 Internal Server Error returned

Example: when trying to delete a deleted or non existing user "CA_adminV", folowing error message occurs
Resulting output:

#pki -d /tmp/tmp.mNuoOX1oF5/nssdb -n "PKI Administrator for rhts.eng.bos.redhat.com" -c Password user-del CA_adminV

org.jboss.resteasy.plugins.providers.jaxb.JAXBUnmarshalException: javax.xml.bind.UnmarshalException
- with linked exception:
[java.io.IOException: Stream closed]
at org.jboss.resteasy.plugins.providers.jaxb.AbstractJAXBProvider.readFrom(AbstractJAXBProvider.java:125)
at org.jboss.resteasy.core.interception.MessageBodyReaderContextImpl.proceed(MessageBodyReaderContextImpl.java:105)
at org.jboss.resteasy.plugins.interceptors.encoding.GZIPDecodingInterceptor.read(GZIPDecodingInterceptor.java:61)
at org.jboss.resteasy.core.interception.MessageBodyReaderContextImpl.proceed(MessageBodyReaderContextImpl.java:108)
at org.jboss.resteasy.client.core.BaseClientResponse.readFrom(BaseClientResponse.java:433)
at org.jboss.resteasy.client.core.BaseClientResponse.getEntity(BaseClientResponse.java:377)
at org.jboss.resteasy.client.core.BaseClientResponse.getEntity(BaseClientResponse.java:350)
at org.jboss.resteasy.client.core.BaseClientResponse.getEntity(BaseClientResponse.java:344)
at com.netscape.certsrv.client.PKIErrorInterceptor.handle(PKIErrorInterceptor.java:49)
at org.jboss.resteasy.client.core.extractors.ClientErrorHandler.clientErrorHandling(ClientErrorHandler.java:49)
at org.jboss.resteasy.client.core.extractors.DefaultEntityExtractorFactory$3.extractEntity(DefaultEntityExtractorFactory.java:55)
at org.jboss.resteasy.client.core.ClientInvoker.invoke(ClientInvoker.java:120)
at org.jboss.resteasy.client.core.ClientProxy.invoke(ClientProxy.java:88)
at com.sun.proxy.$Proxy28.removeUser(Unknown Source)
at com.netscape.certsrv.user.UserClient.removeUser(UserClient.java:73)
at com.netscape.cmstools.user.UserRemoveCLI.execute(UserRemoveCLI.java:49)
at com.netscape.cmstools.user.UserCLI.execute(UserCLI.java:101)
at com.netscape.cmstools.cli.MainCLI.execute(MainCLI.java:350)
at com.netscape.cmstools.cli.MainCLI.main(MainCLI.java:373)
Caused by: javax.xml.bind.UnmarshalException
- with linked exception:
[java.io.IOException: Stream closed]
at com.sun.xml.internal.bind.v2.runtime.unmarshaller.UnmarshallerImpl.unmarshal0(UnmarshallerImpl.java:206)
at com.sun.xml.internal.bind.v2.runtime.unmarshaller.UnmarshallerImpl.unmarshal(UnmarshallerImpl.java:175)
at javax.xml.bind.helpers.AbstractUnmarshallerImpl.unmarshal(AbstractUnmarshallerImpl.java:157)
at javax.xml.bind.helpers.AbstractUnmarshallerImpl.unmarshal(AbstractUnmarshallerImpl.java:125)
at org.jboss.resteasy.plugins.providers.jaxb.AbstractJAXBProvider.readFrom(AbstractJAXBProvider.java:121)
... 18 more
Caused by: java.io.IOException: Stream closed
at java.io.BufferedInputStream.getBufIfOpen(BufferedInputStream.java:162)
at java.io.BufferedInputStream.fill(BufferedInputStream.java:206)
at java.io.BufferedInputStream.read(BufferedInputStream.java:254)
at org.jboss.resteasy.client.core.SelfExpandingBufferredInputStream.read(SelfExpandingBufferredInputStream.java:47)
at com.sun.org.apache.xerces.internal.impl.XMLEntityManager$RewindableInputStream.read(XMLEntityManager.java:2815)
at com.sun.org.apache.xerces.internal.impl.XMLEntityManager.setupCurrentEntity(XMLEntityManager.java:660)
at com.sun.org.apache.xerces.internal.impl.XMLVersionDetector.determineDocVersion(XMLVersionDetector.java:189)
at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:799)
at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:764)
at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(XMLParser.java:123)
at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(AbstractSAXParser.java:1210)
at com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl$JAXPSAXParser.parse(SAXParserImpl.java:568)
at com.sun.xml.internal.bind.v2.runtime.unmarshaller.UnmarshallerImpl.unmarshal0(UnmarshallerImpl.java:203)
... 22 more
ClientResponseFailure: Error status 500 Internal Server Error returned

Expected output:
User doesn't exist.