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="" method="post" encoding="&#x2713;" uuid="3564FB64-90CD-11F1-A98E-3D24F6CBB814" key="login">
    <field key="username" name="username" id="uuid-35652CC4-90CD-11F1-A98E-3D24F6CBB814" value="" widget="text" display="Username" attrs=""/>
    <field attrs="" display="Password" widget="password" id="uuid-35657756-90CD-11F1-A98E-3D24F6CBB814" key="password" name="password"/>
    <field attrs="" display="Login" widget="submit" value="" key="submit" name="submit" id="uuid-3565C36E-90CD-11F1-A98E-3D24F6CBB814"/>
  </form>
</response>