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 key="login" encoding="&#x2713;" uri="" uuid="10C21A78-D17B-11F1-86BC-60D449691810" method="post">
    <field name="username" widget="text" attrs="" display="Username" key="username" value="" id="uuid-10C24B6A-D17B-11F1-86BC-60D449691810" extra=""/>
    <field name="password" display="Password" widget="password" key="password" attrs="" id="uuid-10C2917E-D17B-11F1-86BC-60D449691810" extra=""/>
    <field name="submit" attrs="" widget="submit" display="Login" extra="" value="" id="uuid-10C2D922-D17B-11F1-86BC-60D449691810" key="submit"/>
  </form>
</response>