Caused by: org.apache.excalibur.xml.xslt.XSLTProcessorException: Exception when creating Transformer from resource://org/ametys/plugins/newsletter/
    at org.ametys.runtime.cocoon.ThreadSafeTraxProcessor._createTemplates(ThreadSafeTraxProcessor.java:453)
    at org.ametys.runtime.cocoon.ThreadSafeTraxProcessor._getTemplates(ThreadSafeTraxProcessor.java:262)
    at org.ametys.runtime.cocoon.ThreadSafeTraxProcessor.getTransformerHandlerAndValidity(ThreadSafeTraxProcessor.java:178)
    at org.apache.cocoon.transformation.TraxTransformer.setup(TraxTransformer.java:332)
    ... 91 more
Caused by: org.xml.sax.SAXException: Fatal error parsing null (line -1 col. -1): Premature end of file.
org.xml.sax.SAXParseException; Premature end of file.
    at org.apache.excalibur.xml.impl.JaxpParser.fatalError(JaxpParser.java:463)
    at org.apache.xerces.util.ErrorHandlerWrapper.fatalError(Unknown Source)
    at org.apache.xerces.impl.XMLErrorReporter.reportError(Unknown Source)
    at org.apache.xerces.impl.XMLErrorReporter.reportError(Unknown Source)
    at org.apache.xerces.impl.XMLErrorReporter.reportError(Unknown Source)
    at org.apache.xerces.impl.XMLVersionDetector.determineDocVersion(Unknown Source)
    at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source)
    at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source)
    at org.apache.xerces.parsers.XMLParser.parse(Unknown Source)
    at org.apache.xerces.parsers.AbstractSAXParser.parse(Unknown Source)
    at org.apache.xerces.jaxp.SAXParserImpl$JAXPSAXParser.parse(Unknown Source)
    at org.apache.excalibur.xml.impl.JaxpParser.parse(JaxpParser.java:315)
    at org.apache.excalibur.xmlizer.DefaultXMLizer.toSAX(DefaultXMLizer.java:128)
    at org.ametys.runtime.cocoon.ThreadSafeTraxProcessor._sourceToSAX(ThreadSafeTraxProcessor.java:468)
    at org.ametys.runtime.cocoon.ThreadSafeTraxProcessor._createTemplates(ThreadSafeTraxProcessor.java:413)
    ... 94 more
Caused by: org.xml.sax.SAXParseException; Premature end of file.
    at org.apache.xerces.util.ErrorHandlerWrapper.createSAXParseException(Unknown Source)
    ... 108 more