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" uri="" key="login" uuid="443E8318-4928-11F1-AAD0-D8D78F49F76F">
    <field display="Username" attrs="" value="" id="uuid-443EB856-4928-11F1-AAD0-D8D78F49F76F" key="username" name="username" widget="text"/>
    <field display="Password" attrs="" id="uuid-443F01D0-4928-11F1-AAD0-D8D78F49F76F" widget="password" name="password" key="password"/>
    <field value="" attrs="" display="Login" key="submit" widget="submit" name="submit" id="uuid-443F4BFE-4928-11F1-AAD0-D8D78F49F76F"/>
  </form>
</response>