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;" method="post" key="login" uri="" uuid="F470B2F0-7562-11F0-8939-BF8F160DF820">
    <field display="Username" widget="text" value="" attrs="" name="username" id="uuid-F470D9CE-7562-11F0-8939-BF8F160DF820" key="username"/>
    <field widget="password" display="Password" attrs="" key="password" name="password" id="uuid-F4712424-7562-11F0-8939-BF8F160DF820"/>
    <field key="submit" name="submit" id="uuid-F4716DD0-7562-11F0-8939-BF8F160DF820" attrs="" widget="submit" display="Login" value=""/>
  </form>
</response>