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="A6E6A47A-4E49-11F1-ABFB-9AECF8248A5F" method="post" key="login" uri="" encoding="&#x2713;">
    <field id="uuid-A6E6D51C-4E49-11F1-ABFB-9AECF8248A5F" widget="text" value="" key="username" name="username" attrs="" display="Username"/>
    <field id="uuid-A6E71AA4-4E49-11F1-ABFB-9AECF8248A5F" widget="password" name="password" key="password" attrs="" display="Password"/>
    <field attrs="" display="Login" value="" widget="submit" id="uuid-A6E7641E-4E49-11F1-ABFB-9AECF8248A5F" key="submit" name="submit"/>
  </form>
</response>