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 encoding="&#x2713;" key="login" uri="" uuid="E4CBE3AA-8ADE-11F1-AE40-43B125D43659" method="post">
    <field display="Username" widget="text" name="username" value="" attrs="" key="username" id="uuid-E4CC1802-8ADE-11F1-AE40-43B125D43659"/>
    <field name="password" attrs="" key="password" id="uuid-E4CC5C7C-8ADE-11F1-AE40-43B125D43659" display="Password" widget="password"/>
    <field widget="submit" display="Login" name="submit" id="uuid-E4CCAA38-8ADE-11F1-AE40-43B125D43659" key="submit" value="" attrs=""/>
  </form>
</response>