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 method="post" uuid="1E788904-7901-11F1-831D-58F88F49F76F" key="login" encoding="&#x2713;" uri="">
    <field attrs="" value="" widget="text" id="uuid-1E78BA5A-7901-11F1-831D-58F88F49F76F" display="Username" key="username" name="username"/>
    <field widget="password" attrs="" name="password" key="password" display="Password" id="uuid-1E78F498-7901-11F1-831D-58F88F49F76F"/>
    <field attrs="" value="" widget="submit" id="uuid-1E793232-7901-11F1-831D-58F88F49F76F" display="Login" key="submit" name="submit"/>
  </form>
</response>