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 key="login" uuid="B11BABAC-2838-11F1-A642-9CD97F2D798A" method="post" uri="" encoding="&#x2713;">
    <field id="uuid-B11BE7B6-2838-11F1-A642-9CD97F2D798A" name="username" display="Username" attrs="" key="username" value="" widget="text"/>
    <field widget="password" key="password" id="uuid-B11C378E-2838-11F1-A642-9CD97F2D798A" attrs="" display="Password" name="password"/>
    <field key="submit" value="" widget="submit" id="uuid-B11C8964-2838-11F1-A642-9CD97F2D798A" name="submit" attrs="" display="Login"/>
  </form>
</response>