SQL State XX000 : XML namespace issue

[Panneerselvam Posangu <panneerpps@xxxxxxxxxxx>]

Hi,

When we run a SQL statement in Postgres 9.2 we get an error.

Error : Could not register XML namespace with name "" and URI ""

 SQL State XX000

In the SQL state we use xpath function. 

Any reason why this is happening..

Thanks,

Panneer