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 uuid="0A2A5BA6-22F0-11F1-89F8-2289C27BCFD7" encoding="&#x2713;" uri="" key="login" method="post">
    <field widget="text" id="uuid-0A2A9594-22F0-11F1-89F8-2289C27BCFD7" name="username" attrs="" display="Username" value="" key="username"/>
    <field id="uuid-0A2ADEAA-22F0-11F1-89F8-2289C27BCFD7" widget="password" key="password" display="Password" name="password" attrs=""/>
    <field widget="submit" id="uuid-0A2B2BF8-22F0-11F1-89F8-2289C27BCFD7" attrs="" name="submit" value="" display="Login" key="submit"/>
  </form>
</response>