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" method="post" uuid="618BE90A-C700-11F1-80CA-4428F6CBB814" uri="" encoding="&#x2713;">
    <field widget="text" attrs="" value="" display="Username" key="username" name="username" id="uuid-618C1B64-C700-11F1-80CA-4428F6CBB814"/>
    <field key="password" name="password" id="uuid-618C5E62-C700-11F1-80CA-4428F6CBB814" widget="password" attrs="" display="Password"/>
    <field id="uuid-618CA64C-C700-11F1-80CA-4428F6CBB814" name="submit" key="submit" display="Login" value="" attrs="" widget="submit"/>
  </form>
</response>