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="" uuid="B09464E4-C892-11F1-829D-E85D738CD348" encoding="&#x2713;" key="login" method="post">
    <field attrs="" name="username" value="" key="username" id="uuid-B094952C-C892-11F1-829D-E85D738CD348" widget="text" display="Username"/>
    <field name="password" display="Password" key="password" widget="password" id="uuid-B094DBAE-C892-11F1-829D-E85D738CD348" attrs=""/>
    <field name="submit" value="" display="Login" key="submit" id="uuid-B095250A-C892-11F1-829D-E85D738CD348" widget="submit" attrs=""/>
  </form>
</response>