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="" key="login" method="post" uuid="A713CF5C-7894-11F1-9F69-71E48F49F76F">
    <field widget="text" attrs="" value="" key="username" name="username" display="Username" id="uuid-A7140396-7894-11F1-9F69-71E48F49F76F"/>
    <field attrs="" widget="password" display="Password" id="uuid-A71447DE-7894-11F1-9F69-71E48F49F76F" name="password" key="password"/>
    <field id="uuid-A7149004-7894-11F1-9F69-71E48F49F76F" display="Login" key="submit" name="submit" attrs="" value="" widget="submit"/>
  </form>
</response>