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="3801597E-8DA0-11F1-916B-966F7BD1CDC2" method="post" encoding="&#x2713;" key="login" uri="">
    <field value="" display="Username" id="uuid-38018EC6-8DA0-11F1-916B-966F7BD1CDC2" name="username" key="username" widget="text" attrs=""/>
    <field attrs="" widget="password" key="password" name="password" display="Password" id="uuid-3801D746-8DA0-11F1-916B-966F7BD1CDC2"/>
    <field value="" display="Login" id="uuid-38022502-8DA0-11F1-916B-966F7BD1CDC2" name="submit" key="submit" widget="submit" attrs=""/>
  </form>
</response>