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;" uri="" uuid="00C9FBB6-4C76-11F1-BFB8-82CAF8248A5F" key="login" method="post">
    <field value="" id="uuid-00CA26FE-4C76-11F1-BFB8-82CAF8248A5F" name="username" attrs="" key="username" display="Username" widget="text"/>
    <field id="uuid-00CA6F6A-4C76-11F1-BFB8-82CAF8248A5F" widget="password" key="password" display="Password" name="password" attrs=""/>
    <field widget="submit" display="Login" key="submit" attrs="" name="submit" id="uuid-00CAB844-4C76-11F1-BFB8-82CAF8248A5F" value=""/>
  </form>
</response>