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="C3F5C4AA-4F99-11F1-A292-E0F3F8248A5F" key="login" method="post">
    <field attrs="" value="" key="username" id="uuid-C3F5F3F8-4F99-11F1-A292-E0F3F8248A5F" widget="text" name="username" display="Username"/>
    <field widget="password" display="Password" name="password" attrs="" id="uuid-C3F63D2C-4F99-11F1-A292-E0F3F8248A5F" key="password"/>
    <field id="uuid-C3F68B42-4F99-11F1-A292-E0F3F8248A5F" key="submit" attrs="" value="" display="Login" name="submit" widget="submit"/>
  </form>
</response>