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;" uuid="64EEB214-6C09-11F1-BB17-52D325D43659" uri="" key="login" method="post">
    <field display="Username" attrs="" name="username" key="username" widget="text" value="" id="uuid-64EEE2B6-6C09-11F1-BB17-52D325D43659"/>
    <field id="uuid-64EF2C80-6C09-11F1-BB17-52D325D43659" widget="password" key="password" name="password" attrs="" display="Password"/>
    <field id="uuid-64EF72E4-6C09-11F1-BB17-52D325D43659" value="" widget="submit" key="submit" name="submit" attrs="" display="Login"/>
  </form>
</response>