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 uuid="33725C9C-C788-11F1-91E7-F656738CD348" encoding="&#x2713;" method="post" key="login" uri="">
    <field name="username" value="" widget="text" id="uuid-337292C0-C788-11F1-91E7-F656738CD348" key="username" display="Username" attrs=""/>
    <field key="password" widget="password" id="uuid-3372DB04-C788-11F1-91E7-F656738CD348" display="Password" name="password" attrs=""/>
    <field value="" name="submit" id="uuid-3373224E-C788-11F1-91E7-F656738CD348" key="submit" widget="submit" display="Login" attrs=""/>
  </form>
</response>