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="3556B338-2601-11F1-977E-8CAEC27BCFD7" uri="" encoding="&#x2713;" key="login" method="post">
    <field widget="text" id="uuid-3556E4B6-2601-11F1-977E-8CAEC27BCFD7" key="username" name="username" attrs="" value="" display="Username"/>
    <field id="uuid-35572CC8-2601-11F1-977E-8CAEC27BCFD7" widget="password" key="password" display="Password" name="password" attrs=""/>
    <field key="submit" display="Login" value="" attrs="" name="submit" id="uuid-35577804-2601-11F1-977E-8CAEC27BCFD7" widget="submit"/>
  </form>
</response>