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="93CBE0A2-8EF0-11F1-83BB-DC9F25D43659" method="post" encoding="&#x2713;" key="login" uri="">
    <field name="username" attrs="" display="Username" id="uuid-93CC164E-8EF0-11F1-83BB-DC9F25D43659" key="username" value="" widget="text"/>
    <field widget="password" display="Password" name="password" id="uuid-93CC55A0-8EF0-11F1-83BB-DC9F25D43659" attrs="" key="password"/>
    <field name="submit" attrs="" id="uuid-93CC96A0-8EF0-11F1-83BB-DC9F25D43659" display="Login" key="submit" value="" widget="submit"/>
  </form>
</response>