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;" method="post" uri="" uuid="C4B1D1BA-901A-11F1-8E53-13D7F5CBB814" key="login">
    <field value="" widget="text" name="username" key="username" id="uuid-C4B20608-901A-11F1-8E53-13D7F5CBB814" attrs="" display="Username"/>
    <field widget="password" key="password" name="password" attrs="" display="Password" id="uuid-C4B24956-901A-11F1-8E53-13D7F5CBB814"/>
    <field display="Login" attrs="" id="uuid-C4B29456-901A-11F1-8E53-13D7F5CBB814" key="submit" name="submit" widget="submit" value=""/>
  </form>
</response>