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="A44496CC-8135-11F1-83F7-77AF25D43659" key="login" encoding="&#x2713;" uri="">
    <field value="" display="Username" id="uuid-A444C570-8135-11F1-83F7-77AF25D43659" widget="text" key="username" attrs="" name="username"/>
    <field name="password" attrs="" key="password" id="uuid-A4450F26-8135-11F1-83F7-77AF25D43659" widget="password" display="Password"/>
    <field id="uuid-A4455AEE-8135-11F1-83F7-77AF25D43659" widget="submit" key="submit" attrs="" name="submit" display="Login" value=""/>
  </form>
</response>