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="019FDD06-9157-11F0-9149-83173049FC8C" key="login" method="post" uri="" encoding="&#x2713;">
    <field id="uuid-01A015AA-9157-11F0-9149-83173049FC8C" key="username" display="Username" name="username" widget="text" value="" attrs=""/>
    <field name="password" widget="password" attrs="" id="uuid-01A05CF4-9157-11F0-9149-83173049FC8C" key="password" display="Password"/>
    <field attrs="" value="" widget="submit" name="submit" display="Login" key="submit" id="uuid-01A0A966-9157-11F0-9149-83173049FC8C"/>
  </form>
</response>