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 encoding="&#x2713;" uri="" uuid="E9AA0B82-1A67-11F1-BF44-7A54C27BCFD7" key="login" method="post">
    <field name="username" key="username" value="" id="uuid-E9AA3CCE-1A67-11F1-BF44-7A54C27BCFD7" display="Username" attrs="" widget="text"/>
    <field key="password" name="password" id="uuid-E9AA82A6-1A67-11F1-BF44-7A54C27BCFD7" display="Password" attrs="" widget="password"/>
    <field attrs="" widget="submit" display="Login" key="submit" name="submit" value="" id="uuid-E9AAC98C-1A67-11F1-BF44-7A54C27BCFD7"/>
  </form>
</response>