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 uri="" method="post" encoding="&#x2713;" uuid="ABE203C8-8FBA-11F0-B770-2729DBBCD7F8" key="login">
    <field name="username" key="username" display="Username" id="uuid-ABE23BA4-8FBA-11F0-B770-2729DBBCD7F8" value="" widget="text" attrs=""/>
    <field display="Password" key="password" widget="password" id="uuid-ABE2835C-8FBA-11F0-B770-2729DBBCD7F8" attrs="" name="password"/>
    <field name="submit" widget="submit" value="" id="uuid-ABE2CA6A-8FBA-11F0-B770-2729DBBCD7F8" attrs="" display="Login" key="submit"/>
  </form>
</response>