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 encoding="&#x2713;" method="post" uuid="BD852104-CD59-11F1-A904-FCF98D6E13F8" uri="" key="login">
    <field key="username" widget="text" name="username" id="uuid-BD855430-CD59-11F1-A904-FCF98D6E13F8" value="" attrs="" display="Username"/>
    <field widget="password" key="password" attrs="" display="Password" id="uuid-BD85A02A-CD59-11F1-A904-FCF98D6E13F8" name="password"/>
    <field key="submit" widget="submit" name="submit" id="uuid-BD85EC1A-CD59-11F1-A904-FCF98D6E13F8" value="" attrs="" display="Login"/>
  </form>
</response>