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 key="login" encoding="&#x2713;" method="post" uuid="1BEC4464-6FCE-11F1-8FC5-5ABFF8248A5F" uri="">
    <field widget="text" attrs="" display="Username" value="" id="uuid-1BEC790C-6FCE-11F1-8FC5-5ABFF8248A5F" key="username" name="username"/>
    <field id="uuid-1BECBF0C-6FCE-11F1-8FC5-5ABFF8248A5F" name="password" key="password" attrs="" widget="password" display="Password"/>
    <field key="submit" name="submit" value="" id="uuid-1BED078C-6FCE-11F1-8FC5-5ABFF8248A5F" display="Login" widget="submit" attrs=""/>
  </form>
</response>