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="E10D965E-6C21-11F1-B8C9-A8D725D43659" encoding="&#x2713;" uri="" key="login" method="post">
    <field key="username" widget="text" name="username" display="Username" attrs="" id="uuid-E10DCC64-6C21-11F1-B8C9-A8D725D43659" value=""/>
    <field widget="password" key="password" attrs="" display="Password" name="password" id="uuid-E10E12A0-6C21-11F1-B8C9-A8D725D43659"/>
    <field value="" id="uuid-E10E5CA6-6C21-11F1-B8C9-A8D725D43659" name="submit" attrs="" display="Login" widget="submit" key="submit"/>
  </form>
</response>