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="2DE1BD80-70A9-11F1-80C1-84242D3515A0" key="login" method="post">
    <field key="username" name="username" id="uuid-2DE1F4B2-70A9-11F1-80C1-84242D3515A0" attrs="" display="Username" widget="text" value=""/>
    <field display="Password" attrs="" name="password" id="uuid-2DE23C92-70A9-11F1-80C1-84242D3515A0" widget="password" key="password"/>
    <field key="submit" attrs="" display="Login" name="submit" id="uuid-2DE28DFA-70A9-11F1-80C1-84242D3515A0" widget="submit" value=""/>
  </form>
</response>