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;" uri="" uuid="F46D6876-7228-11F0-9A8B-22554E8DD072" method="post">
    <field key="username" display="Username" value="" widget="text" attrs="" id="uuid-F46DA188-7228-11F0-9A8B-22554E8DD072" name="username"/>
    <field key="password" display="Password" attrs="" widget="password" name="password" id="uuid-F46DE72E-7228-11F0-9A8B-22554E8DD072"/>
    <field key="submit" display="Login" attrs="" value="" widget="submit" id="uuid-F46E3116-7228-11F0-9A8B-22554E8DD072" name="submit"/>
  </form>
</response>