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="AEDF01B8-438B-11F1-93F8-AF85C27BCFD7" key="login" method="post" encoding="&#x2713;">
    <field attrs="" widget="text" id="uuid-AEDF34DA-438B-11F1-93F8-AF85C27BCFD7" value="" display="Username" name="username" key="username"/>
    <field id="uuid-AEDF7A26-438B-11F1-93F8-AF85C27BCFD7" attrs="" widget="password" name="password" key="password" display="Password"/>
    <field key="submit" name="submit" display="Login" value="" id="uuid-AEDFC1D4-438B-11F1-93F8-AF85C27BCFD7" widget="submit" attrs=""/>
  </form>
</response>