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="5FE341FC-76BF-11F1-B7A9-DF061BBD9EFC" key="login" encoding="&#x2713;" uri="">
    <field name="username" key="username" attrs="" id="uuid-5FE37852-76BF-11F1-B7A9-DF061BBD9EFC" widget="text" value="" display="Username"/>
    <field name="password" key="password" attrs="" id="uuid-5FE3BB28-76BF-11F1-B7A9-DF061BBD9EFC" widget="password" display="Password"/>
    <field name="submit" key="submit" attrs="" id="uuid-5FE3FF3E-76BF-11F1-B7A9-DF061BBD9EFC" display="Login" value="" widget="submit"/>
  </form>
</response>