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 encoding="&#x2713;" uuid="55762A5C-7B36-11F0-8380-1BD1F3489F51" uri="" method="post" key="login">
    <field key="username" id="uuid-55766058-7B36-11F0-8380-1BD1F3489F51" attrs="" value="" widget="text" display="Username" name="username"/>
    <field key="password" id="uuid-5576AAE0-7B36-11F0-8380-1BD1F3489F51" attrs="" display="Password" widget="password" name="password"/>
    <field value="" attrs="" id="uuid-5576F23E-7B36-11F0-8380-1BD1F3489F51" key="submit" name="submit" widget="submit" display="Login"/>
  </form>
</response>