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" uuid="1BA4865E-CB01-11F1-83C4-00928D6E13F8" key="login" encoding="&#x2713;" uri="">
    <field id="uuid-1BA4BBF6-CB01-11F1-83C4-00928D6E13F8" key="username" value="" display="Username" attrs="" widget="text" name="username"/>
    <field attrs="" name="password" widget="password" key="password" id="uuid-1BA502E6-CB01-11F1-83C4-00928D6E13F8" display="Password"/>
    <field id="uuid-1BA54B52-CB01-11F1-83C4-00928D6E13F8" key="submit" value="" display="Login" attrs="" widget="submit" name="submit"/>
  </form>
</response>