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="" encoding="&#x2713;" key="login" uuid="521273E8-41A6-11F1-83AC-36EB2597109C" method="post">
    <field id="uuid-5212A728-41A6-11F1-83AC-36EB2597109C" attrs="" value="" display="Username" widget="text" key="username" name="username"/>
    <field attrs="" display="Password" id="uuid-5212F0B6-41A6-11F1-83AC-36EB2597109C" name="password" key="password" widget="password"/>
    <field display="Login" value="" attrs="" id="uuid-52133DDC-41A6-11F1-83AC-36EB2597109C" key="submit" widget="submit" name="submit"/>
  </form>
</response>