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" uri="" uuid="E9CE3A00-3459-11F1-A988-3F0E2697109C">
    <field id="uuid-E9CE6EDA-3459-11F1-A988-3F0E2697109C" value="" name="username" attrs="" key="username" display="Username" widget="text"/>
    <field widget="password" display="Password" key="password" name="password" attrs="" id="uuid-E9CEB32C-3459-11F1-A988-3F0E2697109C"/>
    <field value="" id="uuid-E9CEFD5A-3459-11F1-A988-3F0E2697109C" display="Login" widget="submit" attrs="" name="submit" key="submit"/>
  </form>
</response>