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 uri="" encoding="&#x2713;" method="post" key="login" uuid="700AB170-9B12-11F0-91A8-D0373B611A6C">
    <field id="uuid-700AE532-9B12-11F0-91A8-D0373B611A6C" display="Username" widget="text" key="username" value="" name="username" attrs=""/>
    <field name="password" attrs="" widget="password" key="password" id="uuid-700B2C9A-9B12-11F0-91A8-D0373B611A6C" display="Password"/>
    <field display="Login" id="uuid-700B73F8-9B12-11F0-91A8-D0373B611A6C" key="submit" widget="submit" value="" name="submit" attrs=""/>
  </form>
</response>