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 uri="" encoding="&#x2713;" uuid="DAD08C84-8E5E-11F0-B9EA-8B893B611A6C" key="login" method="post">
    <field id="uuid-DAD0BE5C-8E5E-11F0-B9EA-8B893B611A6C" value="" key="username" widget="text" name="username" attrs="" display="Username"/>
    <field attrs="" display="Password" key="password" widget="password" name="password" id="uuid-DAD10704-8E5E-11F0-B9EA-8B893B611A6C"/>
    <field value="" id="uuid-DAD14F7A-8E5E-11F0-B9EA-8B893B611A6C" attrs="" display="Login" key="submit" widget="submit" name="submit"/>
  </form>
</response>