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="" uuid="E05DC696-7C54-11F1-9230-30C1F8248A5F" method="post" encoding="&#x2713;" key="login">
    <field id="uuid-E05DF490-7C54-11F1-9230-30C1F8248A5F" widget="text" name="username" key="username" attrs="" value="" display="Username"/>
    <field key="password" name="password" widget="password" id="uuid-E05E3CF2-7C54-11F1-9230-30C1F8248A5F" display="Password" attrs=""/>
    <field attrs="" value="" display="Login" id="uuid-E05E859A-7C54-11F1-9230-30C1F8248A5F" widget="submit" name="submit" key="submit"/>
  </form>
</response>