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 uri="" key="login" uuid="836D6786-4BE7-11F1-82E5-B10BF9248A5F" encoding="&#x2713;" method="post">
    <field attrs="" name="username" display="Username" key="username" widget="text" value="" id="uuid-836D9724-4BE7-11F1-82E5-B10BF9248A5F"/>
    <field attrs="" name="password" key="password" display="Password" widget="password" id="uuid-836DDC84-4BE7-11F1-82E5-B10BF9248A5F"/>
    <field value="" id="uuid-836E2A86-4BE7-11F1-82E5-B10BF9248A5F" attrs="" name="submit" key="submit" display="Login" widget="submit"/>
  </form>
</response>