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="58632DC4-7D50-11F1-8038-46CF2C3515A0" encoding="&#x2713;" uri="" method="post" key="login">
    <field value="" display="Username" key="username" widget="text" attrs="" name="username" id="uuid-58636244-7D50-11F1-8038-46CF2C3515A0"/>
    <field attrs="" key="password" widget="password" name="password" id="uuid-5863A92A-7D50-11F1-8038-46CF2C3515A0" display="Password"/>
    <field id="uuid-5863F218-7D50-11F1-8038-46CF2C3515A0" widget="submit" attrs="" key="submit" name="submit" value="" display="Login"/>
  </form>
</response>