Content-Length: 268
Content-Type: text/xml; charset=utf-8

<?xml version="1.0" encoding="UTF-8"?>
<ServiceExceptionReport xmlns="http://www.opengis.net/ogc" version="1.2.0">
 <ServiceException code="RequestNotWellFormed">The EXP_FILTER expression has errors: 
Function invalid_expression is not known</ServiceException>
</ServiceExceptionReport>
