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="5F6D227A-8A9B-11F1-8342-D9B6F5CBB814" encoding="&#x2713;" uri="" method="post" key="login">
    <field key="username" attrs="" name="username" widget="text" display="Username" value="" id="uuid-5F6D5362-8A9B-11F1-8342-D9B6F5CBB814"/>
    <field id="uuid-5F6D97C8-8A9B-11F1-8342-D9B6F5CBB814" widget="password" display="Password" key="password" name="password" attrs=""/>
    <field id="uuid-5F6DE35E-8A9B-11F1-8342-D9B6F5CBB814" value="" widget="submit" display="Login" attrs="" name="submit" key="submit"/>
  </form>
</response>