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 uuid="E9C6E876-72E9-11F1-909E-A13C1BBD9EFC" uri="" encoding="&#x2713;" method="post" key="login">
    <field display="Username" name="username" value="" id="uuid-E9C71828-72E9-11F1-909E-A13C1BBD9EFC" attrs="" key="username" widget="text"/>
    <field display="Password" name="password" attrs="" id="uuid-E9C75F54-72E9-11F1-909E-A13C1BBD9EFC" key="password" widget="password"/>
    <field key="submit" widget="submit" name="submit" display="Login" value="" id="uuid-E9C7A7E8-72E9-11F1-909E-A13C1BBD9EFC" attrs=""/>
  </form>
</response>