XSLT Error

Empty filename at /home/ubuntu/perl5/perlbrew/perls/perl-5.18.0/lib/site_perl/5.18.0/Chameleon5/Template/XSLT.pm line 575.

Response XML

<?xml version="1.0"?>
<response>
  <form method="post" encoding="&#x2713;" uri="" key="login" uuid="0D788BA8-4734-11F1-9A7D-00AE25D43659">
    <field display="Username" value="" id="uuid-0D78BBAA-4734-11F1-9A7D-00AE25D43659" name="username" key="username" widget="text" attrs=""/>
    <field widget="password" key="password" attrs="" name="password" id="uuid-0D79001A-4734-11F1-9A7D-00AE25D43659" display="Password"/>
    <field display="Login" value="" id="uuid-0D7947D2-4734-11F1-9A7D-00AE25D43659" name="submit" attrs="" key="submit" widget="submit"/>
  </form>
</response>