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 uri="" encoding="&#x2713;" key="login" method="post" uuid="B9753CCC-2F64-11F1-9AEB-86C82597109C">
    <field display="Username" value="" name="username" attrs="" id="uuid-B975AE3C-2F64-11F1-9AEB-86C82597109C" widget="text" key="username"/>
    <field name="password" display="Password" key="password" widget="password" id="uuid-B975F162-2F64-11F1-9AEB-86C82597109C" attrs=""/>
    <field display="Login" value="" name="submit" attrs="" id="uuid-B9763AE6-2F64-11F1-9AEB-86C82597109C" widget="submit" key="submit"/>
  </form>
</response>