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="74D21C98-84DC-11F1-88D9-57F025D43659" key="login" encoding="&#x2713;" uri="" method="post">
    <field id="uuid-74D2529E-84DC-11F1-88D9-57F025D43659" widget="text" key="username" attrs="" name="username" display="Username" value=""/>
    <field attrs="" name="password" display="Password" id="uuid-74D29C72-84DC-11F1-88D9-57F025D43659" widget="password" key="password"/>
    <field id="uuid-74D2E6C8-84DC-11F1-88D9-57F025D43659" widget="submit" key="submit" name="submit" attrs="" display="Login" value=""/>
  </form>
</response>