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="CA7FB3A4-40D9-11F1-8247-2D26802D798A" uri="" key="login" encoding="&#x2713;" method="post">
    <field id="uuid-CA7FED88-40D9-11F1-8247-2D26802D798A" widget="text" key="username" display="Username" attrs="" name="username" value=""/>
    <field attrs="" display="Password" name="password" id="uuid-CA8030E0-40D9-11F1-8247-2D26802D798A" widget="password" key="password"/>
    <field attrs="" display="Login" value="" name="submit" id="uuid-CA807582-40D9-11F1-8247-2D26802D798A" widget="submit" key="submit"/>
  </form>
</response>