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 method="post" uuid="71153CC6-2220-11F1-B20D-08C70C0019C7" uri="" key="login" encoding="&#x2713;">
    <field key="username" id="uuid-71156D40-2220-11F1-B20D-08C70C0019C7" display="Username" name="username" attrs="" value="" widget="text"/>
    <field key="password" id="uuid-7115B3B8-2220-11F1-B20D-08C70C0019C7" widget="password" attrs="" name="password" display="Password"/>
    <field display="Login" name="submit" attrs="" widget="submit" value="" id="uuid-7115FB98-2220-11F1-B20D-08C70C0019C7" key="submit"/>
  </form>
</response>