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="" method="post" key="login" encoding="&#x2713;" uuid="B69A5D2A-7CFD-11F1-A91D-3F8A25D43659">
    <field id="uuid-B69A9150-7CFD-11F1-A91D-3F8A25D43659" widget="text" name="username" attrs="" display="Username" key="username" value=""/>
    <field key="password" name="password" display="Password" attrs="" widget="password" id="uuid-B69ADA0C-7CFD-11F1-A91D-3F8A25D43659"/>
    <field id="uuid-B69B2598-7CFD-11F1-A91D-3F8A25D43659" widget="submit" name="submit" attrs="" display="Login" value="" key="submit"/>
  </form>
</response>