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;" uri="" uuid="E13EFC50-7917-11F1-8730-9501F9248A5F" key="login" method="post">
    <field key="username" widget="text" name="username" value="" attrs="" display="Username" id="uuid-E13F2A40-7917-11F1-8730-9501F9248A5F"/>
    <field attrs="" display="Password" id="uuid-E13F7496-7917-11F1-8730-9501F9248A5F" key="password" name="password" widget="password"/>
    <field widget="submit" name="submit" key="submit" display="Login" id="uuid-E13FBCDA-7917-11F1-8730-9501F9248A5F" attrs="" value=""/>
  </form>
</response>