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 encoding="&#x2713;" uri="" method="post" key="login" uuid="3BEF9554-4454-11F1-AC88-52BCF8248A5F">
    <field value="" name="username" id="uuid-3BEFC9C0-4454-11F1-AC88-52BCF8248A5F" key="username" widget="text" display="Username" attrs=""/>
    <field key="password" attrs="" widget="password" display="Password" name="password" id="uuid-3BF01178-4454-11F1-AC88-52BCF8248A5F"/>
    <field display="Login" widget="submit" attrs="" key="submit" name="submit" id="uuid-3BF05F34-4454-11F1-AC88-52BCF8248A5F" value=""/>
  </form>
</response>