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" uuid="1496CE90-7862-11F1-AEEA-7E261BBD9EFC" key="login" encoding="&#x2713;">
    <field id="uuid-1496FD3E-7862-11F1-AEEA-7E261BBD9EFC" attrs="" display="Username" value="" widget="text" name="username" key="username"/>
    <field id="uuid-14974352-7862-11F1-AEEA-7E261BBD9EFC" attrs="" widget="password" display="Password" name="password" key="password"/>
    <field name="submit" key="submit" id="uuid-14978E84-7862-11F1-AEEA-7E261BBD9EFC" attrs="" value="" display="Login" widget="submit"/>
  </form>
</response>