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;" uuid="DDB98D3C-3BE8-11F1-A9E5-74DC2597109C" uri="" key="login" method="post">
    <field display="Username" value="" key="username" id="uuid-DDB9BF64-3BE8-11F1-A9E5-74DC2597109C" widget="text" name="username" attrs=""/>
    <field id="uuid-DDBA0852-3BE8-11F1-A9E5-74DC2597109C" key="password" display="Password" name="password" attrs="" widget="password"/>
    <field widget="submit" attrs="" name="submit" value="" display="Login" id="uuid-DDBA4FBA-3BE8-11F1-A9E5-74DC2597109C" key="submit"/>
  </form>
</response>