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="3A37ADFA-6722-11F1-BD33-AF6A1BBD9EFC" key="login" encoding="&#x2713;" uri="" method="post">
    <field widget="text" name="username" id="uuid-3A37E09A-6722-11F1-BD33-AF6A1BBD9EFC" key="username" attrs="" value="" display="Username"/>
    <field widget="password" id="uuid-3A382924-6722-11F1-BD33-AF6A1BBD9EFC" name="password" key="password" display="Password" attrs=""/>
    <field widget="submit" key="submit" name="submit" id="uuid-3A3871F4-6722-11F1-BD33-AF6A1BBD9EFC" value="" attrs="" display="Login"/>
  </form>
</response>