“[Fatal Error] :1:120: The processing instruction target matching ”[xX][mM][lL]“ is not allowed.” [duplicate]

Answer 1

Another answer to this is using XML within XML will break you need to not parse the inner XML and use the CDATA tag see here:

http://www.w3schools.com/xml/xml_cdata.asp

ie:

<?xml version='1.0'?>
  <sometag>
  <![CDATA[
    <?xml version='1.0'?>
    <nonParsedTag></nonParsedTag>
  ]]></sometag>

Answer 2

The problem is that you have more than one XML header or noise before one.

The typical start of an XML doc...

<?xml version='1.0'?>

looks like a PI, but isn't. If you have an extra, or if you have anything other than a BOM before one, that's the error you'll get.

Answer 3

It is actually because of unwanted content, in my case it was because I always use comments for understanding the code later so I had comments with <!-- --> before the <?xml version='1.0'?>

So just put comments after this line and Problem Solved!

Answer 4

I encountered the same problem and I solved like following.

Following code cause error.

<?xml version="1.0" encoding="UTF-8"?>

So, I simply put a space before ?>.

<?xml version="1.0" encoding="UTF-8" ?>

After I did like that, there was no more error.

Answer 5

I faced similar issue on deploying a spring webapp on weblogic. We had first line as blank in xml file. This caused XML parsing failure with this error. After removing this, it worked!! Hope it is useful info for others too.. :)

Answer 6

I figured it out. I needed to clear the buffer after every new participant is created. duh!!!

thanks for the help!!