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="4FF2F836-2EF4-11F1-A1C7-96C97F2D798A" uri="" key="login" method="post">
    <field attrs="" key="username" widget="text" name="username" id="uuid-4FF333FA-2EF4-11F1-A1C7-96C97F2D798A" display="Username" value=""/>
    <field display="Password" id="uuid-4FF37EB4-2EF4-11F1-A1C7-96C97F2D798A" name="password" widget="password" key="password" attrs=""/>
    <field value="" display="Login" name="submit" id="uuid-4FF3CC70-2EF4-11F1-A1C7-96C97F2D798A" widget="submit" key="submit" attrs=""/>
  </form>
</response>