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;" uuid="C49075E2-8DD1-11F1-BA90-F572898B97BA" key="login" uri="" method="post">
    <field name="username" attrs="" display="Username" value="" id="uuid-C490A58A-8DD1-11F1-BA90-F572898B97BA" widget="text" key="username"/>
    <field key="password" widget="password" display="Password" id="uuid-C490EE46-8DD1-11F1-BA90-F572898B97BA" attrs="" name="password"/>
    <field widget="submit" key="submit" attrs="" name="submit" value="" display="Login" id="uuid-C4913838-8DD1-11F1-BA90-F572898B97BA"/>
  </form>
</response>