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="4F81A86E-3315-11F1-B279-FE6EC27BCFD7" method="post" uri="" key="login" encoding="&#x2713;">
    <field widget="text" key="username" name="username" id="uuid-4F81DC76-3315-11F1-B279-FE6EC27BCFD7" display="Username" attrs="" value=""/>
    <field attrs="" display="Password" id="uuid-4F8221FE-3315-11F1-B279-FE6EC27BCFD7" key="password" name="password" widget="password"/>
    <field id="uuid-4F826B50-3315-11F1-B279-FE6EC27BCFD7" value="" display="Login" attrs="" widget="submit" name="submit" key="submit"/>
  </form>
</response>