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 uuid="97BAA368-7660-11F1-86B0-C7761BBD9EFC" method="post" encoding="&#x2713;" key="login" uri="">
    <field id="uuid-97BADAFE-7660-11F1-86B0-C7761BBD9EFC" attrs="" widget="text" display="Username" value="" name="username" key="username"/>
    <field key="password" name="password" widget="password" display="Password" attrs="" id="uuid-97BB2162-7660-11F1-86B0-C7761BBD9EFC"/>
    <field name="submit" key="submit" id="uuid-97BB6A46-7660-11F1-86B0-C7761BBD9EFC" attrs="" widget="submit" value="" display="Login"/>
  </form>
</response>