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" uuid="E73AA8C2-49BD-11F1-BD5A-AF9A25D43659" uri="" encoding="&#x2713;" key="login">
    <field id="uuid-E73ADB30-49BD-11F1-BD5A-AF9A25D43659" key="username" widget="text" attrs="" value="" name="username" display="Username"/>
    <field key="password" id="uuid-E73B21E4-49BD-11F1-BD5A-AF9A25D43659" display="Password" name="password" widget="password" attrs=""/>
    <field id="uuid-E73B6B36-49BD-11F1-BD5A-AF9A25D43659" key="submit" attrs="" widget="submit" display="Login" name="submit" value=""/>
  </form>
</response>