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" encoding="&#x2713;" uri="" uuid="539B51FC-4D37-11F1-BA4F-00F18F49F76F" key="login">
    <field id="uuid-539B8500-4D37-11F1-BA4F-00F18F49F76F" value="" display="Username" attrs="" key="username" name="username" widget="text"/>
    <field id="uuid-539BD1FE-4D37-11F1-BA4F-00F18F49F76F" display="Password" attrs="" name="password" widget="password" key="password"/>
    <field value="" display="Login" attrs="" id="uuid-539C1C36-4D37-11F1-BA4F-00F18F49F76F" key="submit" widget="submit" name="submit"/>
  </form>
</response>