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 encoding="&#x2713;" method="post" uuid="2FC521EE-9F00-11F0-A75B-D8A63B611A6C" key="login" uri="">
    <field attrs="" id="uuid-2FC55506-9F00-11F0-A75B-D8A63B611A6C" widget="text" display="Username" value="" name="username" key="username"/>
    <field id="uuid-2FC59D22-9F00-11F0-A75B-D8A63B611A6C" attrs="" widget="password" display="Password" key="password" name="password"/>
    <field attrs="" id="uuid-2FC5E584-9F00-11F0-A75B-D8A63B611A6C" display="Login" widget="submit" value="" name="submit" key="submit"/>
  </form>
</response>