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="" encoding="&#x2713;" key="login" uuid="FB32A668-7B73-11F0-9194-DE424E8DD072" method="post">
    <field id="uuid-FB32DCC8-7B73-11F0-9194-DE424E8DD072" key="username" name="username" display="Username" attrs="" widget="text" value=""/>
    <field name="password" id="uuid-FB33275A-7B73-11F0-9194-DE424E8DD072" key="password" display="Password" attrs="" widget="password"/>
    <field name="submit" id="uuid-FB337228-7B73-11F0-9194-DE424E8DD072" key="submit" value="" attrs="" display="Login" widget="submit"/>
  </form>
</response>