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="07C82FB8-316F-11F1-975B-43951ABF1312" method="post" encoding="&#x2713;">
    <field name="username" key="username" attrs="" id="uuid-07C85C90-316F-11F1-975B-43951ABF1312" widget="text" display="Username" value=""/>
    <field id="uuid-07C8A254-316F-11F1-975B-43951ABF1312" widget="password" display="Password" name="password" key="password" attrs=""/>
    <field key="submit" attrs="" name="submit" widget="submit" value="" display="Login" id="uuid-07C8EB42-316F-11F1-975B-43951ABF1312"/>
  </form>
</response>