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="635D7552-881F-11F1-97C9-F05F7BD1CDC2" method="post" key="login">
    <field display="Username" key="username" widget="text" id="uuid-635DA77A-881F-11F1-97C9-F05F7BD1CDC2" value="" name="username" attrs=""/>
    <field display="Password" id="uuid-635DF23E-881F-11F1-97C9-F05F7BD1CDC2" key="password" widget="password" attrs="" name="password"/>
    <field display="Login" name="submit" attrs="" value="" key="submit" widget="submit" id="uuid-635E3A64-881F-11F1-97C9-F05F7BD1CDC2"/>
  </form>
</response>