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 method="post" key="login" uuid="0FBA44B4-75BB-11F1-93E4-51E125D43659" uri="" encoding="&#x2713;">
    <field key="username" display="Username" widget="text" id="uuid-0FBA790C-75BB-11F1-93E4-51E125D43659" name="username" value="" attrs=""/>
    <field name="password" attrs="" key="password" display="Password" widget="password" id="uuid-0FBACBB4-75BB-11F1-93E4-51E125D43659"/>
    <field attrs="" value="" name="submit" id="uuid-0FBB214A-75BB-11F1-93E4-51E125D43659" widget="submit" display="Login" key="submit"/>
  </form>
</response>