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 key="login" uri="" method="post" uuid="C71E9718-74F8-11F1-8630-5F6E1BBD9EFC" encoding="&#x2713;">
    <field display="Username" id="uuid-C71EC9B8-74F8-11F1-8630-5F6E1BBD9EFC" key="username" value="" name="username" widget="text" attrs=""/>
    <field display="Password" key="password" id="uuid-C71F1256-74F8-11F1-8630-5F6E1BBD9EFC" name="password" widget="password" attrs=""/>
    <field id="uuid-C71F5B80-74F8-11F1-8630-5F6E1BBD9EFC" key="submit" value="" display="Login" widget="submit" attrs="" name="submit"/>
  </form>
</response>