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;" uuid="C773DEF0-931F-11F0-93E1-DED82F49FC8C" method="post" key="login" uri="">
    <field widget="text" id="uuid-C77412B2-931F-11F0-93E1-DED82F49FC8C" name="username" value="" display="Username" attrs="" key="username"/>
    <field key="password" attrs="" display="Password" name="password" widget="password" id="uuid-C77459CA-931F-11F0-93E1-DED82F49FC8C"/>
    <field id="uuid-C774A2B8-931F-11F0-93E1-DED82F49FC8C" widget="submit" attrs="" key="submit" name="submit" display="Login" value=""/>
  </form>
</response>