Input is:
<?xml version="1.0"?> <wass xmlns="http://wass.princeton.edu/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation= "http://wass.princeton.edu/wass.xsd"> </wass>

Output is:

HTTP/1.1 200 OK Date: Fri, 04 Apr 2025 00:08:34 GMT Server: Apache Connection: close Transfer-Encoding: chunked Content-Type: text/xml;charset=UTF-8 255 <?xml version="1.0"?><wass><error><errorcode>3</errorcode><errortext>Unable to parse specified XML for simplexml: <?xml version="1.0"?> <wass xmlns="http://wass.princeton.edu/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation= "http://wass.princeton.edu/wass.xsd"></wass> original: <?xml version="1.0"?> <wass xmlns="http://wass.princeton.edu/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation= "http://wass.princeton.edu/wass.xsd"> </wass></errortext></error></wass> 0