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 key="login" uri="" uuid="BAF7BD22-7597-11F0-A4AE-0199160DF820" encoding="&#x2713;" method="post">
    <field name="username" id="uuid-BAF7ED06-7597-11F0-A4AE-0199160DF820" key="username" value="" widget="text" display="Username" attrs=""/>
    <field widget="password" attrs="" display="Password" id="uuid-BAF833F6-7597-11F0-A4AE-0199160DF820" name="password" key="password"/>
    <field key="submit" name="submit" id="uuid-BAF87ADC-7597-11F0-A4AE-0199160DF820" display="Login" widget="submit" value="" attrs=""/>
  </form>
</response>