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 uuid="704EC1B6-9226-11F0-AB3E-421A36923908" key="login" encoding="&#x2713;" uri="" method="post">
    <field name="username" display="Username" id="uuid-704EF974-9226-11F0-AB3E-421A36923908" widget="text" attrs="" key="username" value=""/>
    <field display="Password" id="uuid-704F4550-9226-11F0-AB3E-421A36923908" name="password" widget="password" key="password" attrs=""/>
    <field name="submit" id="uuid-704F932A-9226-11F0-AB3E-421A36923908" display="Login" key="submit" attrs="" widget="submit" value=""/>
  </form>
</response>