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="" key="login" uuid="D36E5922-71D9-11F0-9786-3BCCF3489F51" method="post" encoding="&#x2713;">
    <field name="username" widget="text" attrs="" key="username" value="" display="Username" id="uuid-D36E8BA4-71D9-11F0-9786-3BCCF3489F51"/>
    <field display="Password" id="uuid-D36ED1AE-71D9-11F0-9786-3BCCF3489F51" key="password" attrs="" widget="password" name="password"/>
    <field attrs="" key="submit" value="" display="Login" id="uuid-D36F1BB4-71D9-11F0-9786-3BCCF3489F51" name="submit" widget="submit"/>
  </form>
</response>