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="" uuid="2F6756EE-4938-11F1-BCBB-4ADB25D43659" encoding="&#x2713;" key="login" method="post">
    <field id="uuid-2F678A42-4938-11F1-BCBB-4ADB25D43659" widget="text" attrs="" key="username" value="" display="Username" name="username"/>
    <field attrs="" key="password" id="uuid-2F67D222-4938-11F1-BCBB-4ADB25D43659" widget="password" display="Password" name="password"/>
    <field widget="submit" id="uuid-2F681CFA-4938-11F1-BCBB-4ADB25D43659" attrs="" key="submit" display="Login" name="submit" value=""/>
  </form>
</response>