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 uuid="E047FDE8-24CF-11F1-83FD-34ACC27BCFD7" uri="" encoding="&#x2713;" method="post" key="login">
    <field widget="text" id="uuid-E0483268-24CF-11F1-83FD-34ACC27BCFD7" key="username" name="username" attrs="" display="Username" value=""/>
    <field key="password" display="Password" name="password" attrs="" id="uuid-E0487A2A-24CF-11F1-83FD-34ACC27BCFD7" widget="password"/>
    <field id="uuid-E048C476-24CF-11F1-83FD-34ACC27BCFD7" widget="submit" display="Login" value="" attrs="" name="submit" key="submit"/>
  </form>
</response>