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" key="login" uuid="43A9F720-7A2F-11F0-AAEB-284162E0087B" uri="" encoding="&#x2713;">
    <field name="username" attrs="" id="uuid-43AA3280-7A2F-11F0-AAEB-284162E0087B" key="username" value="" widget="text" display="Username"/>
    <field widget="password" display="Password" key="password" name="password" attrs="" id="uuid-43AA7588-7A2F-11F0-AAEB-284162E0087B"/>
    <field attrs="" id="uuid-43AABEE4-7A2F-11F0-AAEB-284162E0087B" name="submit" value="" key="submit" widget="submit" display="Login"/>
  </form>
</response>