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;" key="login" uuid="EF874FF0-9421-11F0-8828-2C1355FD9ABD" method="post" uri="">
    <field widget="text" display="Username" name="username" value="" key="username" id="uuid-EF878268-9421-11F0-8828-2C1355FD9ABD" attrs=""/>
    <field display="Password" name="password" widget="password" key="password" id="uuid-EF87C674-9421-11F0-8828-2C1355FD9ABD" attrs=""/>
    <field id="uuid-EF880FC6-9421-11F0-8828-2C1355FD9ABD" key="submit" attrs="" value="" display="Login" name="submit" widget="submit"/>
  </form>
</response>