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" uuid="8844C622-8432-11F1-9B61-A61BF9248A5F" uri="" encoding="&#x2713;" method="post">
    <field attrs="" id="uuid-8844F7D2-8432-11F1-9B61-A61BF9248A5F" key="username" name="username" value="" widget="text" display="Username"/>
    <field id="uuid-8845405C-8432-11F1-9B61-A61BF9248A5F" key="password" attrs="" display="Password" widget="password" name="password"/>
    <field attrs="" id="uuid-88458B8E-8432-11F1-9B61-A61BF9248A5F" key="submit" widget="submit" name="submit" value="" display="Login"/>
  </form>
</response>