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="E8368780-9C4A-11F0-9329-EC4DDBBCD7F8" key="login" encoding="&#x2713;" uri="" method="post">
    <field attrs="" widget="text" key="username" name="username" value="" display="Username" id="uuid-E836BE44-9C4A-11F0-9329-EC4DDBBCD7F8"/>
    <field key="password" name="password" attrs="" widget="password" id="uuid-E83705CA-9C4A-11F0-9329-EC4DDBBCD7F8" display="Password"/>
    <field display="Login" value="" id="uuid-E8374FB2-9C4A-11F0-9329-EC4DDBBCD7F8" attrs="" widget="submit" key="submit" name="submit"/>
  </form>
</response>