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="C366CE02-7B56-11F0-A97E-86364E8DD072" key="login" uri="" encoding="&#x2713;">
    <field name="username" key="username" id="uuid-C366FFB2-7B56-11F0-A97E-86364E8DD072" value="" widget="text" display="Username" attrs=""/>
    <field attrs="" display="Password" widget="password" name="password" id="uuid-C36746F2-7B56-11F0-A97E-86364E8DD072" key="password"/>
    <field name="submit" key="submit" id="uuid-C3678FB8-7B56-11F0-A97E-86364E8DD072" value="" widget="submit" display="Login" attrs=""/>
  </form>
</response>