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="" encoding="&#x2713;" uuid="A4DF2A52-729E-11F1-BF0D-6EB125D43659" method="post" key="login">
    <field key="username" widget="text" display="Username" attrs="" name="username" id="uuid-A4DF5F2C-729E-11F1-BF0D-6EB125D43659" value=""/>
    <field id="uuid-A4DFA6C6-729E-11F1-BF0D-6EB125D43659" name="password" attrs="" display="Password" widget="password" key="password"/>
    <field key="submit" widget="submit" display="Login" attrs="" name="submit" value="" id="uuid-A4DFCEDA-729E-11F1-BF0D-6EB125D43659"/>
  </form>
</response>