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="98412A6E-C84F-11F1-ACEC-82F08D6E13F8" uri="" encoding="&#x2713;" key="login" method="post">
    <field widget="text" attrs="" name="username" display="Username" id="uuid-98415F66-C84F-11F1-ACEC-82F08D6E13F8" value="" key="username"/>
    <field id="uuid-9841A728-C84F-11F1-ACEC-82F08D6E13F8" key="password" display="Password" attrs="" name="password" widget="password"/>
    <field id="uuid-9841EEE0-C84F-11F1-ACEC-82F08D6E13F8" value="" display="Login" key="submit" attrs="" name="submit" widget="submit"/>
  </form>
</response>