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 key="login" method="post" encoding="&#x2713;" uri="" uuid="346A47C4-1A39-11F1-B4EB-604DC27BCFD7">
    <field id="uuid-346A794C-1A39-11F1-B4EB-604DC27BCFD7" name="username" key="username" value="" display="Username" attrs="" widget="text"/>
    <field display="Password" attrs="" widget="password" id="uuid-346ABCAE-1A39-11F1-B4EB-604DC27BCFD7" key="password" name="password"/>
    <field name="submit" key="submit" value="" id="uuid-346B0452-1A39-11F1-B4EB-604DC27BCFD7" widget="submit" display="Login" attrs=""/>
  </form>
</response>