2019-07-11 15:16:37 INFO ListenerProcessor:? - Mime Message parsing successful
[Fatal Error] :19:3: An invalid XML character (Unicode: 0x3) was found in the element content of the document.
org.xml.sax.SAXParseException; lineNumber: 19; columnNumber: 3; An invalid XML character (Unicode: 0x3) was found in the element content of the document.
at org.apache.xerces.parsers.AbstractSAXParser.parse(Unknown Source)
at org.apache.xerces.jaxp.SAXParserImpl$JAXPSAXParser.parse(Unknown Source)
at groovy.util.XmlSlurper.parse(XmlSlurper.java:207)
There seems to be an invalid character in your XML. Is there a difference in XML between your test and live versions?