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="4406A610-9D60-11F0-88B3-608A3B611A6C" method="post" uri="" encoding="&#x2713;" key="login">
    <field name="username" widget="text" id="uuid-4406DCCA-9D60-11F0-88B3-608A3B611A6C" key="username" attrs="" value="" display="Username"/>
    <field display="Password" attrs="" key="password" id="uuid-44072568-9D60-11F0-88B3-608A3B611A6C" widget="password" name="password"/>
    <field attrs="" key="submit" id="uuid-44076D3E-9D60-11F0-88B3-608A3B611A6C" widget="submit" name="submit" display="Login" value=""/>
  </form>
</response>