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="1C36E076-8C13-11F1-A47B-0BCEF5CBB814" key="login" uri="" method="post" encoding="&#x2713;">
    <field attrs="" display="Username" id="uuid-1C371488-8C13-11F1-A47B-0BCEF5CBB814" key="username" name="username" widget="text" value=""/>
    <field id="uuid-1C375574-8C13-11F1-A47B-0BCEF5CBB814" display="Password" attrs="" name="password" key="password" widget="password"/>
    <field value="" widget="submit" name="submit" key="submit" id="uuid-1C379CB4-8C13-11F1-A47B-0BCEF5CBB814" attrs="" display="Login"/>
  </form>
</response>