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="" encoding="&#x2713;" uuid="BD72FB2A-273A-11F1-AB70-C58CC27BCFD7" method="post" key="login">
    <field name="username" attrs="" display="Username" id="uuid-BD733036-273A-11F1-AB70-C58CC27BCFD7" key="username" value="" widget="text"/>
    <field key="password" widget="password" name="password" attrs="" id="uuid-BD737424-273A-11F1-AB70-C58CC27BCFD7" display="Password"/>
    <field value="" widget="submit" key="submit" display="Login" id="uuid-BD73BD12-273A-11F1-AB70-C58CC27BCFD7" name="submit" attrs=""/>
  </form>
</response>