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 method="post" key="login" uuid="C5E14FE0-67E1-11F1-B415-F8B925D43659" encoding="&#x2713;" uri="">
    <field id="uuid-C5E17722-67E1-11F1-B415-F8B925D43659" value="" key="username" widget="text" name="username" attrs="" display="Username"/>
    <field id="uuid-C5E1BE12-67E1-11F1-B415-F8B925D43659" name="password" display="Password" attrs="" widget="password" key="password"/>
    <field value="" id="uuid-C5E209A8-67E1-11F1-B415-F8B925D43659" attrs="" display="Login" name="submit" key="submit" widget="submit"/>
  </form>
</response>