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="781EDC04-F39D-11F0-93E2-C9CC2597109C" method="post" key="login">
    <field attrs="" display="Username" name="username" id="uuid-781F1278-F39D-11F0-93E2-C9CC2597109C" widget="text" key="username" value=""/>
    <field name="password" display="Password" attrs="" key="password" widget="password" id="uuid-781F5864-F39D-11F0-93E2-C9CC2597109C"/>
    <field display="Login" name="submit" attrs="" key="submit" value="" id="uuid-781FA576-F39D-11F0-93E2-C9CC2597109C" widget="submit"/>
  </form>
</response>