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 method="post" encoding="&#x2713;" uuid="BE3222EE-3E04-11F1-9D6D-7B052697109C" uri="" key="login">
    <field display="Username" id="uuid-BE3270BE-3E04-11F1-9A0E-7B052697109C" name="username" attrs="" value="" widget="text" key="username"/>
    <field attrs="" widget="password" key="password" display="Password" id="uuid-BE329D1E-3E04-11F1-9A0E-7B052697109C" name="password"/>
    <field id="uuid-BE32C8D4-3E04-11F1-A265-7B052697109C" display="Login" name="submit" widget="submit" key="submit" attrs="" value=""/>
  </form>
</response>