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" uuid="7EFCAFBE-6AD7-11F0-BAF3-596462E0087B" encoding="&#x2713;" method="post" uri="">
    <field attrs="" display="Username" widget="text" key="username" name="username" value="" id="uuid-7EFCDE44-6AD7-11F0-BAF3-596462E0087B"/>
    <field attrs="" display="Password" widget="password" name="password" key="password" id="uuid-7EFD22BE-6AD7-11F0-BAF3-596462E0087B"/>
    <field attrs="" widget="submit" display="Login" name="submit" key="submit" id="uuid-7EFD6BFC-6AD7-11F0-BAF3-596462E0087B" value=""/>
  </form>
</response>