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" uri="" uuid="B855CE48-4E9E-11F1-8EC6-CCE125D43659" encoding="&#x2713;" method="post">
    <field name="username" display="Username" value="" attrs="" key="username" widget="text" id="uuid-B855FFF8-4E9E-11F1-8EC6-CCE125D43659"/>
    <field widget="password" id="uuid-B8564922-4E9E-11F1-8EC6-CCE125D43659" attrs="" key="password" name="password" display="Password"/>
    <field attrs="" key="submit" id="uuid-B8569364-4E9E-11F1-8EC6-CCE125D43659" widget="submit" name="submit" display="Login" value=""/>
  </form>
</response>