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="7C0DB720-75D2-11F0-9B77-AD254E8DD072" uri="" method="post" key="login" encoding="&#x2713;">
    <field key="username" widget="text" value="" display="Username" name="username" attrs="" id="uuid-7C0DEE52-75D2-11F0-9B77-AD254E8DD072"/>
    <field display="Password" widget="password" key="password" id="uuid-7C0E3862-75D2-11F0-9B77-AD254E8DD072" attrs="" name="password"/>
    <field name="submit" attrs="" id="uuid-7C0E8146-75D2-11F0-9B77-AD254E8DD072" key="submit" value="" widget="submit" display="Login"/>
  </form>
</response>